You can’t exactly expect the URL to indicate the type
Yes, this seems like one of the bigger hitches. I’ve never investigated, but I wonder if the git+ssh plan is formalized, and whether it is an option
A smarter app could detect the type of server responsible for managing certain things (i.e. when you’re following a Lemmy community, treat posts in it as such, and not as a flat timeline), …
Seems a mistake to me too imagine that the future of ActivityPub is servers limited to specific certain content types?
Need to think more about the client/server parts of your post, but again, thanks for taking the time