This is the fate of any federated social, maybe now it is not a big problem and the feature is used properly to moderate spam, but soon it would probably end up

This is the fate of any federated social, maybe now it is not a big problem and the feature is used properly to moderate spam, but soon it would probably end up like Mastodon, where you can have multiple accounts on different instances, but there are always some instances you cannot access because the moderators have banned a huge list of servers (usually for political reasons) where you have your account, not even .social/.online are safe, and let's not even talk about the biggest Japanese ones.