AI created music is mediocre.
Music was mediocre even before AI.
Almost everything we get is mediocre these days, from furniture, to appliances, to toys, to clothing, and everything else. In truth, I have a subscription to Suno AI which is the most popular AI music generator. I use it to add music to my YouTube videos. It will make appropriate sounding background music for pretty much any video without having to pay for royalties. It is an amazing tool, and I don't mind listening to the resulting “music”. But it fits the definition of mediocre, whose synonyms are “Ordinary, Middling, Passable, Average, and Second-rate”. Most of us are conditioned to happily accept second rate for just about everything as long as it actually works.