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?
I think for now the easiest solution would be a browser extension “TakeMeHome” that automatically redirects you when you enter a foreign server that is federated with your home server. Should be pretty easy to implement.
The fediverse has been around for a while, and fediverse people are more likely to want browser extensions than most demographics, so honestly that may already exist!