They don’t. The guy who pushed for it was a troll who made an account specifically to make a big splash and cause issues for the instance and its admins. Wouldn’t be suprised if bots were involved to upvote the concern troll thread.

The community in question didn’t even have anything illegal on it. The troll argued “well they discussed pirating as a thing that exists”. That’s great, do you push for the shutting down of every “true crime” community too? Serial killing is pretty darn illegal but talking about it sure isn’t.