Putting aside control and anecdotes, neither of which would be fair to comment on without more context and a lengthier discussion, this breaks the email metaphor a bit, doesn't it?
The Fediverse is just like email, where we all talk to each other, except Outlook blocked Gmail because MS and Google had a fight during a meeting so you're gonna have to migrate to Yahoo or learn to self-host.
That's not necessarily a criticism, I just find it funny.
The wonders of ActivityPub allow Mastodon users to interact with Lemmy, actually. Wild stuff.