The Fediverse is anything and everything. Yes, in general it’s a public forum, but if you run your own, you can still connect to others, have private conversations, etc. Until it really gets a groundswell and is tested in courts, I’d say we don’t honestly know at this point.

Is email considered a public forum? I can make a DM on my GoToSocial similarly as I can send emails specifically directly to people or an entire mailing list.

Only time will tell though.