What is it about sample-based music that makes it so inferior to acoustic music (on average) that culling it en masse "will result in a net increase in quality"?
Derivative work can be great, sadly lazy derivative work comes off more as theft but in the art world it's a blurry line. [1] [2] [3]
Lazy (creative) work seems of no higher quality than lazy work utilizing premade bits. Bad code made from scratch, a bad song written from scratch, or a bad sample based song...
edit: of order words out