Creating music that you yourself love -- even music no one else will ever hear -- is a peak human experience that I wish everyone got to experience.
The joy of creation is truly wonderful for its own sake.
Can AI help that creation, just like other "synthetic" techniques for making music (not least - the synthesizer)? Definitely.
But for me at least, the less of me (i.e. other people's samples, stock sound effects, DAW gimmicks) that's in my music, the less rush and joy I get from it. The less it feels "mine". But that's all very subjective.
Which takes me back to why this is such a dismal take. Why wouldn't this dude point to how making music is a creative joy, and AI can help bring that joy to more people by lowering the barrier to entry?