The https://fedoraproject.org/wiki/GRUB_2 says "Refrain from using grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg going forward. This is a valid location on Fedora 33 and earlier. However on Fedora 34 and later, it is a small stub file that merely forwards to /boot/grub2/grub.cfg. See the Reinstalling GRUB section if you have accidentally overwritten this file."

But the system administrator's guide says otherwise, this can confuse people, it'd be nice if it can be fixed.