Index: src/wp-includes/blocks.php
===================================================================
--- src/wp-includes/blocks.php	(revision 50827)
+++ src/wp-includes/blocks.php	(working copy)
@@ -334,8 +334,8 @@
  * Determine whether a post or content string has blocks.
  *
  * This test optimizes for performance rather than strict accuracy, detecting
- * the pattern of a block but not validating its structure. For strict accuracy,
- * you should use the block parser on post content.
+ * the pattern of a block but not validating its structure (e.g., doesn't check
+ * reusable blocks). For strict accuracy, you should use the block parser on post content.
  *
  * @since 5.0.0
  *