I listen to music because someone went to the trouble of making music to express themselves, and I'm interested in knowing something of them. You have to put something of yourself into any artistic work for it to have much merit, so what use is the 'art' of something which has no self to me?

The statistical average of what hundreds of millions of artists did cannot be art, because there's no intentionality behind it. There's no statistically average person after all, everyone is a unique collection of memory and temperament which is apparent in the art they create. There is a part of what it means to be human in even the meanest artistic act which I think the output of statistical models necessarily lacks.