Seems like that would be a great niche to either recreate or to discover. It seems like these would still be out there somewhere, given the low technical barriers. If they aren't it seems like they would be easy to create and I can't imagine you are the only one that misses them.
I did find this someone's homebrew mk ttrpg system, dunno if they were inspired by the aol days or not.
Balamb Garden
I think I remember a room named that.
Tabletop Rpg posts, content, and recruitment posts.
Recruitment posts should contain what system is being played, CW for any adult/serious themes players need to be aware of and whether a game is beginner friendly.
An obvious reminder of no racism, sexism, ableism, homophobia and transphobia.
Emphasis on small independent rpgs like the ones in the TTRPGs for Trans Rights in Texas but not against dnd stuff.