To me, ActivityPub support is for a different goal and that's because I see short form and medium-form (i.e. blogs) as separate use cases in practice. Mastodon

To me, ActivityPub support is for a different goal and that's because I see short form and medium-form (i.e. blogs) as separate use cases in practice. Mastodon represents a short form corner of the fediverse. To participate in this corner via a medium-length tool would mean participation from people who are blindly syndicating at worst, and having a disconnected experience at best. It'd be disrespectful to the community there. Instead, Medium authors should be fully present as short form participants, even if all they want to do is share a link. To speak in the town square you need to be present in the town square. In the case of Mastodon, that means reading and writing from a short-form app. The point of adding ActivityPub (both ways) would be to be part of a much, much smaller blog-length corner of the fediverse. It's interesting, but is fundamentally a different goal.