Speaking of "the Future of the #Fediverse" - have you tried the Mammoth mobile app on iPhone? It is a glorious preview of things to come.
They've given their solid mobile app a significant advantage by bundling additional services that fill in the gaps left behind by #ActivityPub. It makes the user experience top-notch.
Services like this (search, user directories, content caches, moderation tools, etc) will be the next big growth area on the Fediverse.