diff --git a/packages/react-native-renderer/src/ReactNativeAttributePayloadFabric.js b/packages/react-native-renderer/src/ReactNativeAttributePayloadFabric.js
index 88d30a81f0a79..f97c31e3980b6 100644
--- a/packages/react-native-renderer/src/ReactNativeAttributePayloadFabric.js
+++ b/packages/react-native-renderer/src/ReactNativeAttributePayloadFabric.js
@@ -14,10 +14,7 @@ import {
 } from 'react-native/Libraries/ReactPrivate/ReactNativePrivateInterface';
 import isArray from 'shared/isArray';
 
-import {
-  enableAddPropertiesFastPath,
-  enableShallowPropDiffing,
-} from 'shared/ReactFeatureFlags';
+import {enableShallowPropDiffing} from 'shared/ReactFeatureFlags';
 
 import type {AttributeConfiguration} from './ReactNativeTypes';
 
@@ -537,11 +534,7 @@ export function create(
   props: Object,
   validAttributes: AttributeConfiguration,
 ): null | Object {
-  if (enableAddPropertiesFastPath) {
-    return fastAddProperties(null, props, validAttributes);
-  } else {
-    return addProperties(null, props, validAttributes);
-  }
+  return fastAddProperties(null, props, validAttributes);
 }
 
 export function diff(
diff --git a/packages/shared/ReactFeatureFlags.js b/packages/shared/ReactFeatureFlags.js
index 9935784b533d2..fdcdbd1d4e168 100644
--- a/packages/shared/ReactFeatureFlags.js
+++ b/packages/shared/ReactFeatureFlags.js
@@ -141,8 +141,6 @@ export const enableServerComponentLogs = true;
  */
 export const enablePersistedModeClonedFlag = false;
 
-export const enableAddPropertiesFastPath = false;
-
 export const enableOwnerStacks = __EXPERIMENTAL__;
 
 export const enableShallowPropDiffing = false;
diff --git a/packages/shared/forks/ReactFeatureFlags.native-fb-dynamic.js b/packages/shared/forks/ReactFeatureFlags.native-fb-dynamic.js
index 2cae164dfdea5..bf25239cf32ad 100644
--- a/packages/shared/forks/ReactFeatureFlags.native-fb-dynamic.js
+++ b/packages/shared/forks/ReactFeatureFlags.native-fb-dynamic.js
@@ -18,7 +18,6 @@
 // add a test configuration for React Native.
 
 export const alwaysThrottleRetries = __VARIANT__;
-export const enableAddPropertiesFastPath = __VARIANT__;
 export const enableObjectFiber = __VARIANT__;
 export const enableHiddenSubtreeInsertionEffectCleanup = __VARIANT__;
 export const enablePersistedModeClonedFlag = __VARIANT__;
diff --git a/packages/shared/forks/ReactFeatureFlags.native-fb.js b/packages/shared/forks/ReactFeatureFlags.native-fb.js
index 83df5ed548da8..a6b149db20dbd 100644
--- a/packages/shared/forks/ReactFeatureFlags.native-fb.js
+++ b/packages/shared/forks/ReactFeatureFlags.native-fb.js
@@ -20,7 +20,6 @@ const dynamicFlags: DynamicExportsType = (dynamicFlagsUntyped: any);
 // the exports object every time a flag is read.
 export const {
   alwaysThrottleRetries,
-  enableAddPropertiesFastPath,
   enableFabricCompleteRootInCommitPhase,
   enableHiddenSubtreeInsertionEffectCleanup,
   enableObjectFiber,
diff --git a/packages/shared/forks/ReactFeatureFlags.native-oss.js b/packages/shared/forks/ReactFeatureFlags.native-oss.js
index 55ab25639fea0..6cce160b56a52 100644
--- a/packages/shared/forks/ReactFeatureFlags.native-oss.js
+++ b/packages/shared/forks/ReactFeatureFlags.native-oss.js
@@ -32,7 +32,6 @@ export const disableLegacyMode = false;
 export const disableSchedulerTimeoutInWorkLoop = false;
 export const disableStringRefs = true;
 export const disableTextareaChildren = false;
-export const enableAddPropertiesFastPath = false;
 export const enableAsyncActions = true;
 export const enableAsyncDebugInfo = false;
 export const enableAsyncIterableChildren = false;
diff --git a/packages/shared/forks/ReactFeatureFlags.test-renderer.js b/packages/shared/forks/ReactFeatureFlags.test-renderer.js
index d12029a672f7c..fc384dc103219 100644
--- a/packages/shared/forks/ReactFeatureFlags.test-renderer.js
+++ b/packages/shared/forks/ReactFeatureFlags.test-renderer.js
@@ -78,7 +78,6 @@ export const disableClientCache = true;
 
 export const enableServerComponentLogs = true;
 export const enableInfiniteRenderLoopDetection = false;
-export const enableAddPropertiesFastPath = false;
 
 export const renameElementSymbol = true;
 export const enableShallowPropDiffing = false;
diff --git a/packages/shared/forks/ReactFeatureFlags.test-renderer.native-fb.js b/packages/shared/forks/ReactFeatureFlags.test-renderer.native-fb.js
index 31b3a118eae5a..ba2432a0d4539 100644
--- a/packages/shared/forks/ReactFeatureFlags.test-renderer.native-fb.js
+++ b/packages/shared/forks/ReactFeatureFlags.test-renderer.native-fb.js
@@ -24,7 +24,6 @@ export const disableLegacyMode = false;
 export const disableSchedulerTimeoutInWorkLoop = false;
 export const disableStringRefs = true;
 export const disableTextareaChildren = false;
-export const enableAddPropertiesFastPath = false;
 export const enableAsyncActions = true;
 export const enableAsyncDebugInfo = false;
 export const enableAsyncIterableChildren = false;
diff --git a/packages/shared/forks/ReactFeatureFlags.test-renderer.www.js b/packages/shared/forks/ReactFeatureFlags.test-renderer.www.js
index 59850bac75099..1fa1b40280ff3 100644
--- a/packages/shared/forks/ReactFeatureFlags.test-renderer.www.js
+++ b/packages/shared/forks/ReactFeatureFlags.test-renderer.www.js
@@ -89,7 +89,6 @@ export const enableReactTestRendererWarning = false;
 export const disableLegacyMode = true;
 
 export const disableDefaultPropsExceptForClasses = false;
-export const enableAddPropertiesFastPath = false;
 
 export const renameElementSymbol = false;
 
diff --git a/packages/shared/forks/ReactFeatureFlags.www-dynamic.js b/packages/shared/forks/ReactFeatureFlags.www-dynamic.js
index dbd00f671d84e..8a82b7f55241b 100644
--- a/packages/shared/forks/ReactFeatureFlags.www-dynamic.js
+++ b/packages/shared/forks/ReactFeatureFlags.www-dynamic.js
@@ -18,7 +18,6 @@ export const disableDefaultPropsExceptForClasses = __VARIANT__;
 export const disableLegacyContextForFunctionComponents = __VARIANT__;
 export const disableLegacyMode = __VARIANT__;
 export const disableSchedulerTimeoutInWorkLoop = __VARIANT__;
-export const enableAddPropertiesFastPath = __VARIANT__;
 export const enableDeferRootSchedulingToMicrotask = __VARIANT__;
 export const enableDO_NOT_USE_disableStrictPassiveEffect = __VARIANT__;
 export const enableHiddenSubtreeInsertionEffectCleanup = __VARIANT__;
diff --git a/packages/shared/forks/ReactFeatureFlags.www.js b/packages/shared/forks/ReactFeatureFlags.www.js
index 0caf25c155625..95a5a4c55cacd 100644
--- a/packages/shared/forks/ReactFeatureFlags.www.js
+++ b/packages/shared/forks/ReactFeatureFlags.www.js
@@ -19,7 +19,6 @@ export const {
   disableDefaultPropsExceptForClasses,
   disableLegacyContextForFunctionComponents,
   disableSchedulerTimeoutInWorkLoop,
-  enableAddPropertiesFastPath,
   enableDebugTracing,
   enableDeferRootSchedulingToMicrotask,
   enableDO_NOT_USE_disableStrictPassiveEffect,