but this assumption starts to break down when you look a little closer.
first, consider #ActivityPub C2S. why is there close to zero usage of this in #fediverse software? simple: it doesn't solve any needs for building a "network" "protocol".
now consider S2S. why are there zero compliant impls in fedi? because AP as specified doesn't address the needs of fedi. what does fedi need? well, i find it telling that the "real" reason AP was adopted was... to implement followers-only posts.
4/?