Who’s to say that the AI-generated content will be worse than human-generated? Just because that’s the case today doesn’t mean it’ll be so forever.
Also, a machine cannot create equally complex or more complex than itself, so AI is always capped at human capacity, at most, asymptotically.
It can be faster. It can batch process, but it can't process "like a human".
Laws about thermodynamics, and entropy still hold. Also, as far as I can see, no living creature, incl The Nature itself succeeded to create something more complex and sophisticated than itself.
So, I'll be sticking to my arguments, for now.