diff --git a/docs/reference-guides/data/data-core-block-editor.md b/docs/reference-guides/data/data-core-block-editor.md
index 9e9c1ef140c76..486fcddfe04ac 100644
--- a/docs/reference-guides/data/data-core-block-editor.md
+++ b/docs/reference-guides/data/data-core-block-editor.md
@@ -515,7 +515,7 @@ _Parameters_
 
 _Returns_
 
--   `?WPDirectInsertBlock`: The block type to be directly inserted.
+-   `WPDirectInsertBlock|undefined`: The block type to be directly inserted.
 
 _Type Definition_
 
diff --git a/packages/block-editor/src/components/inner-blocks/use-nested-settings-update.js b/packages/block-editor/src/components/inner-blocks/use-nested-settings-update.js
index 80acf0e639f9e..25a3dc9dadfa9 100644
--- a/packages/block-editor/src/components/inner-blocks/use-nested-settings-update.js
+++ b/packages/block-editor/src/components/inner-blocks/use-nested-settings-update.js
@@ -37,11 +37,11 @@ function useShallowMemo( value ) {
  *                                                          in inner blocks.
  * @param {string[]}             prioritizedInserterBlocks  Block names and/or block variations to be prioritized in the inserter, in the format {blockName}/{variationName}.
  * @param {?WPDirectInsertBlock} defaultBlock               The default block to insert: [ blockName, { blockAttributes } ].
- * @param {?Function|boolean}    directInsert               If a default block should be inserted directly by the appender.
+ * @param {?boolean}             directInsert               If a default block should be inserted directly by the appender.
  *
  * @param {?WPDirectInsertBlock} __experimentalDefaultBlock A deprecated prop for the default block to insert: [ blockName, { blockAttributes } ]. Use `defaultBlock` instead.
  *
- * @param {?Function|boolean}    __experimentalDirectInsert A deprecated prop for whether a default block should be inserted directly by the appender. Use `directInsert` instead.
+ * @param {?boolean}             __experimentalDirectInsert A deprecated prop for whether a default block should be inserted directly by the appender. Use `directInsert` instead.
  *
  * @param {string}               [templateLock]             The template lock specified for the inner
  *                                                          blocks component. (e.g. "all")
@@ -138,6 +138,16 @@ export default function useNestedSettingsUpdate(
 			newSettings.directInsert = directInsert;
 		}
 
+		if (
+			newSettings.directInsert !== undefined &&
+			typeof newSettings.directInsert !== 'boolean'
+		) {
+			deprecated( 'Using `Function` as a `directInsert` argument', {
+				alternative: '`boolean` values',
+				since: '6.5',
+			} );
+		}
+
 		// Batch updates to block list settings to avoid triggering cascading renders
 		// for each container block included in a tree and optimize initial render.
 		// To avoid triggering updateBlockListSettings for each container block
diff --git a/packages/block-editor/src/store/selectors.js b/packages/block-editor/src/store/selectors.js
index 87d22e3e4727d..03c44ffc7dff4 100644
--- a/packages/block-editor/src/store/selectors.js
+++ b/packages/block-editor/src/store/selectors.js
@@ -2231,56 +2231,41 @@ export const __experimentalGetAllowedBlocks = createSelector(
  * @param    {Object}         state            Editor state.
  * @param    {?string}        rootClientId     Optional root client ID of block list.
  *
- * @return {?WPDirectInsertBlock}              The block type to be directly inserted.
+ * @return {WPDirectInsertBlock|undefined}              The block type to be directly inserted.
  *
  * @typedef {Object} WPDirectInsertBlock
  * @property {string}         name             The type of block.
  * @property {?Object}        attributes       Attributes to pass to the newly created block.
  * @property {?Array<string>} attributesToCopy Attributes to be copied from adjecent blocks when inserted.
  */
-export const getDirectInsertBlock = createSelector(
-	( state, rootClientId = null ) => {
-		if ( ! rootClientId ) {
-			return;
-		}
-		const defaultBlock =
-			state.blockListSettings[ rootClientId ]?.defaultBlock;
-		const directInsert =
-			state.blockListSettings[ rootClientId ]?.directInsert;
-		if ( ! defaultBlock || ! directInsert ) {
-			return;
-		}
-		if ( typeof directInsert === 'function' ) {
-			return directInsert( getBlock( state, rootClientId ) )
-				? defaultBlock
-				: null;
-		}
-		return defaultBlock;
-	},
-	( state, rootClientId ) => [
-		state.blockListSettings[ rootClientId ],
-		state.blocks.tree.get( rootClientId ),
-	]
-);
+export function getDirectInsertBlock( state, rootClientId = null ) {
+	if ( ! rootClientId ) {
+		return;
+	}
+	const { defaultBlock, directInsert } =
+		state.blockListSettings[ rootClientId ] ?? {};
+	if ( ! defaultBlock || ! directInsert ) {
+		return;
+	}
 
-export const __experimentalGetDirectInsertBlock = createSelector(
-	( state, rootClientId = null ) => {
-		deprecated(
-			'wp.data.select( "core/block-editor" ).__experimentalGetDirectInsertBlock',
-			{
-				alternative:
-					'wp.data.select( "core/block-editor" ).getDirectInsertBlock',
-				since: '6.3',
-				version: '6.4',
-			}
-		);
-		return getDirectInsertBlock( state, rootClientId );
-	},
-	( state, rootClientId ) => [
-		state.blockListSettings[ rootClientId ],
-		state.blocks.tree.get( rootClientId ),
-	]
-);
+	return defaultBlock;
+}
+
+export function __experimentalGetDirectInsertBlock(
+	state,
+	rootClientId = null
+) {
+	deprecated(
+		'wp.data.select( "core/block-editor" ).__experimentalGetDirectInsertBlock',
+		{
+			alternative:
+				'wp.data.select( "core/block-editor" ).getDirectInsertBlock',
+			since: '6.3',
+			version: '6.4',
+		}
+	);
+	return getDirectInsertBlock( state, rootClientId );
+}
 
 export const __experimentalGetParsedPattern = createRegistrySelector(
 	( select ) =>