I feel like maybe the downfall of most social media is trying to serve as both the discover and discussion elements, especially when it costs nothing to pin one's note to a global corkboard.
A mastodon instance seems like a pretty good solution if you want the online equivalent of a local/regional meetup or club.
Just as most of the Nostr clients I've tried aren't very good for keeping up with posts from specific users unless I go to the trouble of saving their profile as a browser bookmark.
nostr:note14eqzlmtyy3knvzw2tv9m59ncnp2jwc5g4m9twk2q8d58z0estfjqfjw25u