If I listen to music, I can spend an hour CODING YEAH! and be all smug and satisfied, until I turn the music off and discover that everything I've coded is unnecessary and there is an easier way to achieve the same goal. I just didn't see it, because the creative part of my brain was busy listening to music.
From the post, it sounds like the author discovered the same thing: if you use AI to perform menial tasks (like coding), all that is left is thinking creatively, and you can't do that while listening to music.