As someone who runs a discord server. The issue I had with a forum is that I hate all the off the shelf forums around. There doesn't seem to be any modern forums that I can just host.

If there was, that would actually be really preferred to me. A web app that melded the discord experience of live chat, but also had topics that could be discussed and kept around for both search engines and archives to look back.

But every forum I could find is still a very old and outdated experience. A big one being that you need to refresh the page to see a new response which really changes the dynamic of a conversation. The designs of those forums also really feel like the early 2000s.

Did I miss something or did modern versions of forums just never really get developed?

What about Discourse? They have an open source, self-hostable version:

https://github.com/discourse/discourse