Am I somehow in the minority of people happy with their stuff? I never go to youtube for music. Should I?
Anecodtally, YtM seems to be better for EDM these days; my friends, who are mostly spotify, complain that they're not presented with the same quality and variety of music as I am via YtM. (EDM is just a portion of my tastes, but it's where I have noted a difference in perception between YtM and Spotify).
Sounds like Spotify works for you; if you're finding that "albums you might like" is giving you sufficient good new picks, then why change. If you feel that it's not giving you enough, it might be worth trying YtM (I've been using it for years, and don't know how much that impacts its ability to offer me new music I like, so obviously YMMV).
Oh, you didn't lose much. My playlists are decimated monthly by "video deleted/unavailable" and "not showing 3 unlisted video" or something along the lines. And there is no way to know which video that was. I don't even care to add music to playlists anymore, I just search for it.
Also, algorithms stopped delivering new stuff long ago. The right column is full of tricking you into watching some promoted bs unrelated to the video.