What's nice about the architecture most fedi software including Mastodon follow is that if a better protocol than ActivityPub comes along (like perhaps, Spritel

What's nice about the architecture most fedi software including Mastodon follow is that if a better protocol than ActivityPub comes along (like perhaps, Spritely) they can add support for it and concurrently federate with both protocols. Mastodon used to do this with OStatus.