diff --git a/pkg/ccl/streamingccl/replicationtestutils/testutils.go b/pkg/ccl/streamingccl/replicationtestutils/testutils.go
index 7dded7399709..7394c5911aa6 100644
--- a/pkg/ccl/streamingccl/replicationtestutils/testutils.go
+++ b/pkg/ccl/streamingccl/replicationtestutils/testutils.go
@@ -322,9 +322,7 @@ func CreateServerArgs(args TenantStreamingClustersArgs) base.TestServerArgs {
 		}
 	}
 	return base.TestServerArgs{
-		// Test fails because it tries to set a cluster setting only accessible
-		// to system tenants. Tracked with #76378.
-		DefaultTestTenant: base.TODOTestTenantDisabled,
+		DefaultTestTenant: base.TestControlsTenantsExplicitly,
 		Knobs: base.TestingKnobs{
 			JobsTestingKnobs: defaultJobsTestingKnobs(),
 			DistSQL: &execinfra.TestingKnobs{
diff --git a/pkg/ccl/streamingccl/streamclient/partitioned_stream_client_test.go b/pkg/ccl/streamingccl/streamclient/partitioned_stream_client_test.go
index 8115ce576b2c..d49083499684 100644
--- a/pkg/ccl/streamingccl/streamclient/partitioned_stream_client_test.go
+++ b/pkg/ccl/streamingccl/streamclient/partitioned_stream_client_test.go
@@ -210,9 +210,7 @@ func TestPartitionedStreamReplicationClient(t *testing.T) {
 
 	h, cleanup := replicationtestutils.NewReplicationHelper(t,
 		base.TestServerArgs{
-			// Need to disable the test tenant until tenant-level restore is
-			// supported. Tracked with #76378.
-			DefaultTestTenant: base.TODOTestTenantDisabled,
+			DefaultTestTenant: base.TestControlsTenantsExplicitly,
 			Knobs: base.TestingKnobs{
 				JobsTestingKnobs: jobs.NewTestingKnobsWithShortIntervals(),
 			},
diff --git a/pkg/ccl/streamingccl/streamingest/replication_random_client_test.go b/pkg/ccl/streamingccl/streamingest/replication_random_client_test.go
index 83c9dddd1530..bc94a02c084e 100644
--- a/pkg/ccl/streamingccl/streamingest/replication_random_client_test.go
+++ b/pkg/ccl/streamingccl/streamingest/replication_random_client_test.go
@@ -176,7 +176,7 @@ func TestStreamIngestionJobWithRandomClient(t *testing.T) {
 		ServerArgs: base.TestServerArgs{
 			// Test hangs with test tenant. More investigation is required.
 			// Tracked with #76378.
-			DefaultTestTenant: base.TODOTestTenantDisabled,
+			DefaultTestTenant: base.TestControlsTenantsExplicitly,
 			Knobs: base.TestingKnobs{
 				TenantTestingKnobs: &sql.TenantTestingKnobs{
 					// Needed to pin down the ID of the replication target.
diff --git a/pkg/ccl/streamingccl/streamingest/stream_ingestion_job_test.go b/pkg/ccl/streamingccl/streamingest/stream_ingestion_job_test.go
index 8d09c9b611e4..bc7dda40ef1f 100644
--- a/pkg/ccl/streamingccl/streamingest/stream_ingestion_job_test.go
+++ b/pkg/ccl/streamingccl/streamingest/stream_ingestion_job_test.go
@@ -346,10 +346,7 @@ func TestCutoverBuiltin(t *testing.T) {
 
 	args := base.TestClusterArgs{
 		ServerArgs: base.TestServerArgs{
-			// Disable the test tenant as the test below looks for a
-			// streaming job assuming that it's within the system tenant.
-			// Tracked with #76378.
-			DefaultTestTenant: base.TODOTestTenantDisabled,
+			DefaultTestTenant: base.TestIsSpecificToStorageLayerAndNeedsASystemTenant,
 			Knobs: base.TestingKnobs{
 				JobsTestingKnobs: jobs.NewTestingKnobsWithShortIntervals(),
 			},
@@ -553,7 +550,6 @@ func TestCutoverFractionProgressed(t *testing.T) {
 				},
 			},
 		},
-		DefaultTestTenant: base.TODOTestTenantDisabled,
 	})
 	defer s.Stopper().Stop(ctx)
 
diff --git a/pkg/ccl/streamingccl/streamingest/stream_ingestion_processor_test.go b/pkg/ccl/streamingccl/streamingest/stream_ingestion_processor_test.go
index 9eea4fbb5afc..621aa553fbf1 100644
--- a/pkg/ccl/streamingccl/streamingest/stream_ingestion_processor_test.go
+++ b/pkg/ccl/streamingccl/streamingest/stream_ingestion_processor_test.go
@@ -187,7 +187,13 @@ func TestStreamIngestionProcessor(t *testing.T) {
 	ctx := context.Background()
 
 	tc := testcluster.StartTestCluster(t, 1 /* nodes */, base.TestClusterArgs{
-		ServerArgs: base.TestServerArgs{DefaultTestTenant: base.TODOTestTenantDisabled},
+		ServerArgs: base.TestServerArgs{
+			// Perhaps it would be possible to make this
+			// run in a secondary tenant, but the test
+			// would need to be completely rewritten to be
+			// even further from real-world operation.
+			DefaultTestTenant: base.TestIsSpecificToStorageLayerAndNeedsASystemTenant,
+		},
 	})
 	defer tc.Stopper().Stop(ctx)
 	db := tc.Server(0).InternalDB().(descs.DB)
diff --git a/pkg/ccl/streamingccl/streamproducer/producer_job_test.go b/pkg/ccl/streamingccl/streamproducer/producer_job_test.go
index d8ff908ffa26..4a549e275cd5 100644
--- a/pkg/ccl/streamingccl/streamproducer/producer_job_test.go
+++ b/pkg/ccl/streamingccl/streamproducer/producer_job_test.go
@@ -108,9 +108,7 @@ func TestStreamReplicationProducerJob(t *testing.T) {
 	ctx := context.Background()
 	clusterArgs := base.TestClusterArgs{
 		ServerArgs: base.TestServerArgs{
-			// Test fails within a test tenant. More investigation
-			// is required. Tracked with #76378.
-			DefaultTestTenant: base.TODOTestTenantDisabled,
+			DefaultTestTenant: base.TestIsSpecificToStorageLayerAndNeedsASystemTenant,
 			Knobs: base.TestingKnobs{
 				JobsTestingKnobs: jobs.NewTestingKnobsWithShortIntervals(),
 			},
diff --git a/pkg/ccl/streamingccl/streamproducer/replication_stream_test.go b/pkg/ccl/streamingccl/streamproducer/replication_stream_test.go
index 69c966482b21..2d4ef197fd17 100644
--- a/pkg/ccl/streamingccl/streamproducer/replication_stream_test.go
+++ b/pkg/ccl/streamingccl/streamproducer/replication_stream_test.go
@@ -239,10 +239,7 @@ func TestReplicationStreamInitialization(t *testing.T) {
 	defer log.Scope(t).Close(t)
 
 	serverArgs := base.TestServerArgs{
-		// This test fails when run from within a test tenant. This is likely
-		// due to the lack of support for tenant streaming, but more
-		// investigation is required. Tracked with #76378.
-		DefaultTestTenant: base.TODOTestTenantDisabled,
+		DefaultTestTenant: base.TestControlsTenantsExplicitly,
 		Knobs: base.TestingKnobs{
 			JobsTestingKnobs: jobs.NewTestingKnobsWithShortIntervals(),
 		},
@@ -347,9 +344,7 @@ func TestStreamPartition(t *testing.T) {
 	defer log.Scope(t).Close(t)
 	h, cleanup := replicationtestutils.NewReplicationHelper(t,
 		base.TestServerArgs{
-			// Test fails within a test tenant. More investigation is required.
-			// Tracked with #76378.
-			DefaultTestTenant: base.TODOTestTenantDisabled,
+			DefaultTestTenant: base.TestControlsTenantsExplicitly,
 		})
 	defer cleanup()
 	testTenantName := roachpb.TenantName("test-tenant")
@@ -495,9 +490,7 @@ func TestStreamAddSSTable(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 	h, cleanup := replicationtestutils.NewReplicationHelper(t, base.TestServerArgs{
-		// Test hangs when run within the default test tenant. Tracked with
-		// #76378.
-		DefaultTestTenant: base.TODOTestTenantDisabled,
+		DefaultTestTenant: base.TestControlsTenantsExplicitly,
 	})
 	defer cleanup()
 	testTenantName := roachpb.TenantName("test-tenant")
@@ -587,7 +580,7 @@ func TestCompleteStreamReplication(t *testing.T) {
 			Knobs: base.TestingKnobs{
 				JobsTestingKnobs: jobs.NewTestingKnobsWithShortIntervals(),
 			},
-			DefaultTestTenant: base.TODOTestTenantDisabled,
+			DefaultTestTenant: base.TestControlsTenantsExplicitly,
 		})
 	defer cleanup()
 	srcTenantID := serverutils.TestTenantID()
@@ -655,9 +648,7 @@ func TestStreamDeleteRange(t *testing.T) {
 	skip.UnderStressRace(t, "disabled under stress and race")
 
 	h, cleanup := replicationtestutils.NewReplicationHelper(t, base.TestServerArgs{
-		// Test hangs when run within the default test tenant. Tracked with
-		// #76378.
-		DefaultTestTenant: base.TODOTestTenantDisabled,
+		DefaultTestTenant: base.TestControlsTenantsExplicitly,
 	})
 	defer cleanup()
 	testTenantName := roachpb.TenantName("test-tenant")