@z428 disagree. mastodon and peertube are both fundamentally web sites, passing web documents around. a profile on a web site is a 1-many service. movim is... not that.
if you simplify the use case to "communication" then you end up ignoring the intricacies of how people actually use each system. for example, it is possible to implement a chat service entirely within activitypub, but *should* you? that's a lot of overhead for transient use cases. @benborges @Gargron