rateyourmusic.com is also dead to me now. And MusicBrainz is an excellent resource marred by horrible user experience and a primary focus on listing every issue of an album in every country and in every format (who the hell wants that?)
As for social features, nobody is ever going to use MusicBrainz. They might have used RYM or Last.FM before the site owners made them unusable or pointless.
Please email me (<username>@gmail.com) with any feedback or to rant about music apps in general!
I was going to add Spotify metadata from that recent data dump, but it's kinda trash data (valence isn't trustworthy, wildly wrong a lot of the time).
I then stumbled on lrclib data dump, local LLM and a super two step prompt that extracts extremely high quality lyric based metadata (about the narrator, protagonist, setting, story arc, moods etc)
Anyway, even though I bitched about MusicBrainz in another comment, their JSON dumps can be coaxed into giving the sort of metadata that I wanted to get from RYM, who absolutely suck due to their crazy aggressive blocking, self sabotage and unforgivable data poisoning if you trigger their bot tripwire. Their data came from their users, but as a paying user you can't use their site to tag your music. No API, and you get banned if you try to write a music player plugin to fix the tags in your "now playing" track. I don't know what their business plan is, or who they think their audience is.