To me it's no different than pulling your art from a gallery which is selling the paintings of John Wayne Gacy next to your work - except that music recordings

To me it's no different than pulling your art from a gallery which is selling the paintings of John Wayne Gacy next to your work - except that music recordings are reproducible, so you can sell the same thing on multiple platforms. (Artists in physical media can still distribute their work across many galleries - or "platforms")