Won't be Mastodon, though. Not when people realize that it is, by design, already in the same mess Twitter soon will be with unaccountable individuals (rather than boards or committees, who at least have to compromise with each other) making the rules about what you can send and see on a node-by-node basis (like subreddits with a single mod, but worse since the person who runs the node doesn't have any network-wide content rules they have to obey).