Oh, I wasn't suggesting that Apple monitors them or actively looks for doxxing, but that somebody (potentially from the police) informed them about it, they took a look and concluded that it's against their policy.
I don't know whether that's a common thing, and I expect many companies wouldn't go the Telegram route and publish the demands because they don't want to put stress on their relationship with Apple.
Discord apparently has channels that are used for similar activities, but I don't know whether Apple has asked Discord to hide those channels from the app, or whether anyone complained to Apple in the first place.
