Humans are the ones who created the very AI that you're talking about. The AI is not an act of nature but something made real by human creativity.
I don't understand why you (and others) think this is an important point, though. Let's say, for the sake of argument, not just that you're correct, but that we're not even made of flesh. That we're actual robots called "humans".
I don't see how that changes anything. I'd still prefer "human" communication over communication from a different machine pretending to be "human".
Why? Because what others of my species/model feels and thinks has a unique importance and meaning to me, and having fake versions of that communication around reduces my connection to others of my species/model and devalues the society of them that I am a part of.
Is a world where you already know what the content is, and thus there won't be any point in taking it in.
And we have to do this to some degree to simply navigate the world of content. I already filter for action films or documentaries depending on my mood.
Sure, a world where I have to already know the entire script for a film to have it appear is (while technically astonishing) not great for me individually, one where I can say I want a new Poirot and get it is incredible.
And I don't want to deny you that. My fear is that your preference will be the only choice. One person's heaven can indeed be another person's hell.
But at least a lot of those people will be trying to express something even if all AI can give them is an approximation of what they would make if they had the talent.
But that just makes the issue more important. I don't want to lose what little meaningful art is actually left. Art serves a critically important social function, and if that art is no longer from people, that function is no longer served.
I guess we are different in this case, as I primarily read something for its content, rather than its author (although the author is often a good proxy for the quality of the content). A world where I can instantly generate whatever content I want is a utopia for me, rather than a dystopia.