With images and video, one could make the argument that some of it is/can be utilitarian (slide shows in video format, simple graphics, stock photos/video clips, etc). While generating content like this does take away bread from some artists, you can make the case that artists or video editing professionals are wasted on creating content like that.
But music? Music exists almost solely to elicit emotion and express emotion, not to inform.
I consider empathy a virtue and nurture it in myself, but hard as I have tried I cannot place myself in the shoes of people who'd enjoy generating music for themselves and listening to it, or listening to music generated by others.
I'm also in disbelief that not one music streaming service has implemented a system that weeds out ALL generated content. When Spotify played slop to me twice, I cancelled my subscription that I had for 5 years and spent time looking for an alternative-- Deezer "labels" generated music but does not forbid it. Other than them, nobody else seems to be interested in tackling this problem. Which makes me think I might be somewhat alone in my disgust.