ListenBrainz has filled that void for me. My profile here, https://listenbrainz.org/user/iPodSmypod/ Blog post on the topic: https://theonlyblogever.com/blog/2025/scrobbling-libre.html

I had a peripheral awareness of listenbrainz for scribbling, and think that's neat. However, last.fm's radio and song/artist/genre/tag search and suggestion capabilities were on an otherworldly level. Do the *brainz services have anything that really compares?