Hey, I am currently trying to understand a bit better what the Activity Pub allows and what it doesn’t as I am preparing a presentation on that topic.
On Lemmy I can join other servers without having to recreate an account. Does that also work for across Activity Pub supporting software? Could I join a PeerTube page and then post there? Could I upload videos? Could I join Mastodon or Pixelfed and post images?
In my opinion this is the biggest shortcoming of the ActivityHub ecosystem. That’s not to say it should have been solved by now, since I don’t know how to decentralize authentication safely. And after using it for a while I’m not sure I want a single account.
But it is a challenge facing newcomers and those trying to recruit them. This group of services is already tough to explain sometimes, and telling them it all interconnects just muddies the waters when you have to explain that it’s not the way they expect.