Your point echoes the "death of the author" concept in literature, where the work is independent of the creator, full stop. It's a useful concept up to a point, but if you really have no idea what it means to have a deep connection to music that is wrapped up in some idea of the creator as a human being, you should trust others when they say they do and it's important to them. For those of us with that value, AI slop is offensive, and to be clear, it has precedents in history with Muzak, early schlager music etc -- what they all share is a desire to use the power of music for non-artistic ends, which sucks from any number of viewpoints. If music has non-artistic utility, that doesn't justify a concerted effort to take away artist-made music from those who may not be paying attention.