And no mastodon/"fediverse" is not a sustainable and scalable answer. You still need someone to run the servers (costs $$$) and do moderation (costs human work and sometimes human misery).

Like, this instance running at all is a combination of Someone paying a $700 bill each.and.every.month, and about 5 moderators looking at reports and user registrations each.and.every.day. *So far* this has been working. Will it keep on working? Who knows! Forever? Probably not :/