Can you add a filter for forums that have ActivityPub integration?
I would just visit each forum that looks interesting and check for myself but unfortunately the Federation tab (e.g. https://socialhub.activitypub.rocks/ap/local/actor/52889/followers) only has a visible UI link to it when logged in which makes finding out this information very slow.
I would be more impressed if Discourse worked in my browser without using an extension to inject code changes. It also tries to forbid browsers it doesn't recognize, regardless of their ability to run its code. Plus it doesn't downgrade gracefully—you should be able to view public information in full without Javascript (I don't expect any ability to log in or manipulate content, but reading things should work, and Discourse seems to break scrolling somehow). Not impressed. Granted, I'm not sure what I would choose if I were setting up a Web forum today, since mobile is now such a Big Thing and I don't use it, but Discourse fails at things I consider basic.
Reviewing it (I haven't needed to touch the setup in a good year or more), it's basically a replacement to make other code think the browser acceptability check returned true, since feeding in a fake User-Agent stopped being sufficient to pass the check a couple of years ago. One-liner, and not written by me, but I seriously hate the fact that it pushes browser monopoly.
Found it interesting. This is a link aggregator after all ;)
also I find the UX way better than Lemmy. It lacks Federation which is kind of an issue, but as communities are on one server only anways, federation is pretty limited.
Well ok, I guess if it's new to you. It's been around a long time and most of us have seen Discourse forums. They are interesting or uninteresting depending mostly on the users and topics, rather than the software.