YouTube’s primary value add for me is music remixes and covers that can’t legally make it to Spotify / Apple music / etc., but skirt around the DMCA takedowns. I try and use it as my primary driver for music but the recommendation engine is just terrible. I listen to days of classic rock and most of my recommendations are still centered around that one EDM song I listened to a week ago. Probably because the ratio of people playing EDM videos with sexy thumbnails to people “watching” classic rock lyric videos is very high. Oh well.
Second this. Youtube works very well as my music discovery medium. The 'long tail' on there is just so rich of nice music. And indeed, I can keep clicking that scarce house song in my recommended videos, but the algo still gives me mostly melancholic Romanian deeptechno or something. Although that seems to got a little better after getting rid of all the ads - and meanwhile other tracking shit - by using uBlock.