> If the algorithm perfectly selected more music you like you still wouldn't be more likely to look up the name of the track I don't think.

The causation goes the other way. People are more likely to want to learn about the background behind the music in order to more deeply immerse themselves into a scene where they can be exposed to more music like this. It's why if you go into the record store looking for a recommendation one of the first questions is "What kind of music do you like?" But if nobody ever asks you that question, and you never have to stop and think about it in order to articulate your answer to that question, you wouldn't really know off the top of your head.