Even if somebody wanted to make an unmoderated ATProto app, I guess they could? Good luck with the app stores and regulators and users
ActivityPub provides the option to do just that. Anybody can spin up a server running Mastodon, Lemmy, Pleroma, etc… and moderate it however they like. There are a multitude of clients in app stores and an unmoderated server won’t affect that because they’re generic clients like web browsers. There are countries such a server could be hosted in with minimal regulations.
As for users… you’ll probably get some and they’ll probably be horrible. Most people will probably block your server.