If the Pin to Start context menu item is not working or is missing in Windows 11/10, then you have to change Group Policy or Registry setting.

If you want to remove Pin to Start from the right-click context menu in Windows 11/10, then delete the PintoStartScreen Registry key.

In Windows 10, you can install apps, files, and folders as tiles onto the right side of the Start menu. To do that, right-click any icon and, from the shortcut menu, choose the “Pin to Start ...

ExplorerPatcher was having several issues on Windows 10. The latest update finally resolves them but it is Windows 11 now that is having issues as confirmed by Microsoft earlier today.