We all know that tasteless junk media would never be successful, this is why you only find high quality media on the internet and only high quality media gets popular in the mainstream. That sounds right, right?

Seriously, the nudge for artistic value can be made, although I would very much doubt a creative human making a video for an established song with a clear theme would do better in creativity. Perhaps the one advantage a human would have is to reject the expectations for such a tasks, which the AI is trained to fulfil.

The problem isn't that such content lacks artistic value. It is that it is enough for the broadest audience. The average consumer is basically a vacuum cleaner.