I don't think there is something like that for music specifically, but there are still many traditional forums with interesting discussions. See for example these:
Ahhh, speaking of traditional forums, I personally like https://www.skyscrapercity.com/, it's still surprisingly active. It's also the only where I can get the most updated news about public transport/infrastructure in my country (Indonesia).
Also I just remembered that rateyourmusic apparently have their own forum too: https://rym.fm I've never taken a deep look at it, but it's surprisingly... active?
Also I just remembered that rateyourmusic apparently have their own forum too: https://rym.fm I've never taken a deep look at it, but it's surprisingly... active?