@FinchHaven @strypey I do not think that @naturzukunft2026 misunderstands this.There's a difference between #ActivityPub the protocol and #fediverse the on-the-wire reality, and in the latter #Mastodon is the post-facto interoperability leader.For there to be interoperabiity in a particular domain there needs to be agreement on data formats and msg exchanges, and the specs don't provide full coverage nor clear guidance on this. Though #ActivityStreams has a section on use cases it was designed to handle, they aren't fully specified.Of course it is perfectly fine, and highly encouraged to model a domain in the best possible way, but you won't be "part of the fediverse" until you implement enough of the post-facto Mastodon microblogging interop quirks.We don't have a good ecosystem-level extension approach, and the #FEP constitutes a best-effort. A bandaid that allows to present a best-practice in hopes it gets further adoption.I'm not sure that JSON-LD offers solace though.