Maybe you need to refresh the context - 99.99% of AI generated music, images or text is seen/heard only Once, by the AI user. It's a private affair. The rest of the world are not invited.

If I write a song about my kid and cat it's funny for me and my wife. I don't expect anyone else to hear or like it. It has value to me because I set the topic. It doesn't even need to be perfect musically to be fun for a few minutes.

You seem to be the one who doesn't understand how special it is if you think good music is so simple that AI can zero shot it.

People are mixing and matching these songs and layering their own vocals etc to create novel music. This is barely different from sampling or papier mache or making collages.

People made the same reductionist arguments you're making about electronic music in the early days. Or digital art.