I've discovered so many great artists through Spotify, and been to many of their shows (which Spotify also helps surface with their "Live Events" feature). I regularly get artists with less than 100k listeners in my Discover Weekly, which I then look up, and find that they did a concert on KEXP, and the comments all proclaiming "I knew good music wasn't dead!".

So I can say for sure that I don't share the slop sentiment. Sure, there's some generic filler every now and then, but any non-cohesive mix, as opposed to a carefully curated album is going to have songs that naturally become "fillers".

Just now, I discovered that Spotify snuck in "The Juan Maclean - Running Back To You (2014)", which is a cover of "Brian Bennet - Solstice (1978)". Neither songs are completely unknown, but they're also not exactly Bruno Mars.

I don't know if this is pure luck or algorithmic rhythm analysis, but for me it's working.