There are 3 artists that Spotify continually play to me and I preemptively will fast forward them even during the crossover play because I dislike them so much. I’ve submitted requests before to have a “don’t play me this artist” feature. I don’t know why this is so hard for them.
Youtube for me, fixates on a couple of videos-- as in it recommends them every single time I use it-- one is a Marques Brown retrospective on the Gameboy, and one is the TYT (news outlet), story about a woman who had her face bitten off by an ape and is at least 8 years old.
I don't know why these show up in my recommendations every single day. I will never watch them.
Deezer have that option. When you're listening to something you don't like you can click on a little frowny face, then they will ask you if you want to never hear this song again or the artist.
It's neat.