My counterpoint is that if you’re always listening to the same stuff, your collection feels stale and you’re less likely to listen to more music.
Maybe that’s actually advantageous to the streaming services, but one big reason I cancelled them was that I wasn’t getting anything new.
(Instead, Radar FM in Portugal is where I started tuning into to learn about new stuff.)
Before Apple Music, when it was just the iTunes Store, Apple introduced iTunes Genius and it was scary good at recommending music; it worked so well I shudder to think what I spent in total buying $1 songs off of it.
But apple's music "play similar songs" just seems to take the same artists and pump their other album filler songs.