The TLDR is that Spotify is flooding it's platform and padding playlists with cheap and generic music. They've went full "buffet" strategy, serving lots of fries so you stay away from the meats.
I think calling this payola, as the article insinuates,is wrong.
I was always more interested in finding artists than I was in finding songs. I've noticed Spotify recommendations being worse and worse, and I can happily say I've left the platform half a year ago. Didn't regret it a single bit.
Might as well go back to pirating music and keep a cleaner moral ground.