Eh. Fediverse is a portmanteau of federation and universe. It's perfectly fine and not misleading imho to suggest other federation-capable services in this context. Especially considering Matrix is definitely part of the wider cultural context underpinning the transition of some groups to using these counterculture services (it's often frequently recommended in these contects, often used by people on mastoson etc anyways),
solardirus
joined 1 week ago
Sunshine (the server) and moonlight (the client)