diff --git a/README.md b/README.md
index 54625547..ead52c7a 100755
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ allow you to use latest Javascript in your Ember CLI project.
     + [Enabling Source Maps](#enabling-source-maps)
     + [Modules](#modules)
     + [Disabling Debug Tooling Support](#disabling-debug-tooling-support)
-    + [Enabling TypeScript Transforms](#enabling-typescript-transforms)
+    + [Enabling TypeScript Transpilation](#enabling-typescript-transpilation)
   * [Addon usage](#addon-usage)
     + [Adding Custom Plugins](#adding-custom-plugins)
     + [Additional Trees](#additional-trees)
@@ -122,7 +122,7 @@ interface EmberCLIBabelConfig {
     disablePresetEnv?: boolean;
     disableEmberModulesAPIPolyfill?: boolean;
     disableDecoratorTransforms?: boolean;
-    enableTypeScriptTransforms?: boolean;
+    enableTypeScriptTransform?: boolean;
     extensions?: string[];
   };
 }
@@ -261,33 +261,31 @@ module.exports = function(defaults) {
 }
 ```
 
-#### Enabling TypeScript Transforms
+#### Enabling TypeScript Transpilation
 
-The transform plugins required for Babel to transpile TypeScript (including
-transforms required for all valid TypeScript features such as optional
-chaining and nullish coalescing) will automatically be enabled when
-`ember-cli-typescript` >= 4.0 is installed.
+The transform plugin required for Babel to transpile TypeScript will
+automatically be enabled when `ember-cli-typescript` >= 4.0 is installed.
 
-You can enable the TypeScript Babel transforms manually *without*
-`ember-cli-typescript` by setting the `enableTypeScriptTransforms`to `true`.
+You can enable the TypeScript Babel transform manually *without*
+`ember-cli-typescript` by setting the `enableTypeScriptTransform` to `true`.
 
 NOTE: Setting this option to `true` is not compatible with
 `ember-cli-typescript` < 4.0 because of conflicting Babel plugin ordering
 constraints and is unnecessary because `ember-cli-typescript` < 4.0 adds the
-TypeScript Babel transforms itself.
+TypeScript Babel transform itself.
 
 NOTE: Setting this option to `true` does *not* enable type-checking. For
 integrated type-checking, you will need
 [`ember-cli-typescript`](https://ember-cli-typescript.com).
 
-In an app, manually enabling the TypeScript transforms would look like:
+In an app, manually enabling the TypeScript transform would look like:
 
 ```js
 // ember-cli-build.js
 module.exports = function(defaults) {
   let app = new EmberApp(defaults, {
     'ember-cli-babel': {
-      enableTypeScriptTransforms: true
+      enableTypeScriptTransform: true
     }
   });
 
diff --git a/index.js b/index.js
index 9d78a9b1..2b01723f 100644
--- a/index.js
+++ b/index.js
@@ -304,7 +304,7 @@ module.exports = {
     let userPostTransformPlugins = addonProvidedConfig.postTransformPlugins;
 
     if (shouldHandleTypeScript) {
-      userPlugins = this._addTypeScriptPlugins(userPlugins.slice(), addonProvidedConfig.options);
+      userPlugins = this._addTypeScriptPlugin(userPlugins.slice(), addonProvidedConfig.options);
     }
 
     if (shouldIncludeDecoratorPlugins) {
@@ -337,8 +337,8 @@ module.exports = {
 
   _shouldHandleTypeScript(config) {
       let emberCLIBabelConfig = config['ember-cli-babel'] || {};
-      if (typeof emberCLIBabelConfig.enableTypeScriptTransforms === 'boolean') {
-        return emberCLIBabelConfig.enableTypeScriptTransforms;
+      if (typeof emberCLIBabelConfig.enableTypeScriptTransform === 'boolean') {
+        return emberCLIBabelConfig.enableTypeScriptTransform;
       }
       let typeScriptAddon = this.parent.addons
         && this.parent.addons.find(a => a.name === 'ember-cli-typescript');
@@ -357,39 +357,9 @@ module.exports = {
     return constraints;
   },
 
-  _addTypeScriptPlugins(plugins) {
+  _addTypeScriptPlugin(plugins) {
     const { hasPlugin, addPlugin } = require('ember-cli-babel-plugin-helpers');
 
-    if (hasPlugin(plugins, '@babel/plugin-proposal-optional-chaining')) {
-      if (this.parent === this.project) {
-        this.project.ui.writeWarnLine(`${
-          this._parentName()
-        } has added the optional chaining plugin to its build, but ember-cli-babel provides this by default now when ember-cli-typescript >= 4.0 and typescript >= 3.7 are installed! You can remove the transform, or the addon that provided it.`);
-      }
-    } else {
-      addPlugin(
-        plugins,
-        [
-          require.resolve('@babel/plugin-proposal-optional-chaining'),
-        ]
-      );
-    }
-
-    if (hasPlugin(plugins, '@babel/plugin-proposal-nullish-coalescing-operator')) {
-      if (this.parent === this.project) {
-        this.project.ui.writeWarnLine(`${
-          this._parentName()
-        } has added the nullish coalescing operator plugin to its build, but ember-cli-babel provides this by default now when ember-cli-typescript >= 4.0 and typescript >= 3.7 are installed! You can remove the transform, or the addon that provided it.`);
-      }
-    } else {
-      addPlugin(
-        plugins,
-        [
-          require.resolve('@babel/plugin-proposal-nullish-coalescing-operator'),
-        ]
-      );
-    }
-
     if (hasPlugin(plugins, '@babel/plugin-transform-typescript')) {
       if (this.parent === this.project) {
         this.project.ui.writeWarnLine(`${
diff --git a/node-tests/addon-test.js b/node-tests/addon-test.js
index 61c0014e..904109bd 100644
--- a/node-tests/addon-test.js
+++ b/node-tests/addon-test.js
@@ -805,10 +805,10 @@ describe('ember-cli-babel', function() {
       expect(this.addon._shouldHandleTypeScript({})).to.be.false;
     });
     it('should return true when TypeScript transforms are manually enabled', function() {
-      expect(this.addon._shouldHandleTypeScript({ 'ember-cli-babel': { enableTypeScriptTransforms: true } })).to.be.true;
+      expect(this.addon._shouldHandleTypeScript({ 'ember-cli-babel': { enableTypeScriptTransform: true } })).to.be.true;
     });
     it('should return false when TypeScript transforms are manually disabled', function() {
-      expect(this.addon._shouldHandleTypeScript({ 'ember-cli-babel': { enableTypeScriptTransforms: false } })).to.be.false;
+      expect(this.addon._shouldHandleTypeScript({ 'ember-cli-babel': { enableTypeScriptTransform: false } })).to.be.false;
     });
     it('should return false when TypeScript transforms are manually disabled, even when ember-cli-typescript >= 4.0.0-alpha.1 is installed', function() {
       this.addon.parent.addons.push({
@@ -817,15 +817,11 @@ describe('ember-cli-babel', function() {
           version: '4.0.0-alpha.1',
         },
       });
-      expect(this.addon._shouldHandleTypeScript({ 'ember-cli-babel': { enableTypeScriptTransforms: false } })).to.be.false;
+      expect(this.addon._shouldHandleTypeScript({ 'ember-cli-babel': { enableTypeScriptTransform: false } })).to.be.false;
     });
   });
 
-  describe('_addTypeScriptPlugins', function() {
-    it('should add TypeScript, optional chaining, and nullish coalescing operator plugins', function() {
-      expect(this.addon._addTypeScriptPlugins([], {}).length).to.equal(3, 'plugins added correctly');
-    });
-
+  describe('_addTypeScriptPlugin', function() {
     it('should warn and not add the TypeScript plugin if already added', function() {
       this.addon.project.ui = {
         writeWarnLine(message) {
@@ -834,35 +830,11 @@ describe('ember-cli-babel', function() {
       };
 
       expect(
-        this.addon._addTypeScriptPlugins([
+        this.addon._addTypeScriptPlugin([
           ['@babel/plugin-transform-typescript']
         ],
         {}
-      ).length).to.equal(3, 'plugin was not added');
-    });
-
-    it('should warn and not add optional chaining if already added', function() {
-      this.addon.project.ui = {
-        writeWarnLine(message) {
-          expect(message).to.match(/has added the optional chaining plugin to its build/);
-        }
-      };
-
-      expect(this.addon._addTypeScriptPlugins([
-        ['@babel/plugin-proposal-optional-chaining']
-      ], {}).length).to.equal(3, 'plugin was not added');
-    });
-
-    it('should warn and not add nullish coalescing operator if already added', function() {
-      this.addon.project.ui = {
-        writeWarnLine(message) {
-          expect(message).to.match(/has added the nullish coalescing operator plugin to its build/);
-        }
-      };
-
-      expect(this.addon._addTypeScriptPlugins([
-        ['@babel/plugin-proposal-nullish-coalescing-operator']
-      ], {}).length).to.equal(3, 'plugin was not added');
+      ).length).to.equal(1, 'plugin was not added');
     });
   });
 
diff --git a/package.json b/package.json
index f945314a..896bcd28 100644
--- a/package.json
+++ b/package.json
@@ -43,8 +43,6 @@
     "@babel/core": "^7.8.3",
     "@babel/plugin-proposal-class-properties": "^7.8.3",
     "@babel/plugin-proposal-decorators": "^7.8.3",
-    "@babel/plugin-proposal-nullish-coalescing-operator": "^7.8.3",
-    "@babel/plugin-proposal-optional-chaining": "^7.8.3",
     "@babel/plugin-transform-modules-amd": "^7.8.3",
     "@babel/plugin-transform-runtime": "^7.8.3",
     "@babel/plugin-transform-typescript": "^7.8.3",