

Seriously. For a federation protocol it’s completely busted. For the number of users they have it should be way way more common already but it’s just not because they built it bad. They aren’t making any serious technological innovations, I tend to view their Federation is just a marketing point because it doesn’t seem to function anyway like that in practice. You can self host an activity pub-based service and it just works, you can do it on a $5 VPS and it just works fine no problem
Relay nodes are safe, exit nodes require special care. There’s a guide of you’re interested. You basically need a dedicated server with a understanding hosting provider and you will be contacted by law enforcement sooner or later. They usually go away after they learn it’s a dead end