What is really lacking is all the very specific communities centered around common interests. The more specific the harder, especially if it's not a traditionally nerdy subject. I mean, there's an obvious bias, and I won't pretend I am not part of it.

Those used to have dedicated forums, but Reddit manage to capture them all for convenience, and now very few subsist. A good part of what's left has been abandoned to AI spambots.

Part of this activity is now on discord, but the invite structure isn't great for those. It makes this content hard to discover and impossible to search if you're not aware of it.