and moderation actions from cross-posted communities only affect their “view”, so to speak.

But then if someone posts insults (just to take a simple example), then the original community mods would have to moderate it, and can’t rely on the cross-posted communities mods? Wouldn’t that lead to cross-posted communities mods just consider that the original community mods are the ones responsible for the moderation, and leave it up to them?

And in that case, then the OG community mods would probably just prefer all the comments to happen on their community where they can delete comments and ban people.