> People who enjoy a van Gogh - or any other work - primarily do so because it has particular qualities they appreciate (no, being human-made isn't an intrinsically appreciable quality; secondarily because many humans instinctively like to possess unique - or "shiny" - things)

Speak for yourself. You could show me the exact same artistic image, same exact pixels, but if I know it was made by a human, it will instantly be worth more to me and capture more of my interest. Conversely, having the knowledge that the pixels were created by a machine would make me instantly lose interest in the image.

I think "being human-made" very much is an intrinsically appreciable quality, but you have to include the production of the art as part of the art itself for that to be the case. And I and many other people explicitly do include the production of the art as part of the art itself. Not everyone shares this perspective, but many do.