There's certainly no way to enforce this fediverse-wide, of course.
As a matter for this specific instance, I'd say "maybe." Ideally the reason for such a limitation would be foremost - we don't want to have absentee mods or power-tripping tinpot dictators because of the bad results they give. So maybe an instance could have a policy against that sort of thing, and if a mod breaks them then they get ousted. Reddit's approach has generally been "mods are gods, don't bother admins about them. They rule their kingdoms and we don't care if it sucks." It doesn't have to be that way.