I'd prefer it if the Fediverse was ActivityPub only, for convenience, but as I understand it any platform that supports federation is a part of the fediverse, no matter the protocol used and no matter if it can interact with other federated protocols.
Edit: If you think of the Fediverse as a multiverse instead of a universe it makes more sense.
there is a statistically high likelihood that any individual audience member you hear laughing on certain modern TV shows may have been dead for decades.
Serves them right for being in a canned laughter track!
No but seriously, that's both haunting and beautiful at the same time. They live on. Like laughing ghosts.
OpenSUSE Tumbleweed is among the most stable distros I've ever seen of her life and I have a list of addresses.