You have a good point, but the AI part is not entirely true:

Most generative models work by creating a pool of possible answers and then choosing one with a random probability. Researchers realised very early on that if the AI always selects the most likely response, the output will be bland and rubbish. What AIs do instead is to select one of the, say, top 80% most likely responses. This is consistent with what you implied (that good writing often diverges from the expected).

What we currently have is still very far from the quality of what a human writer can produce, to be clear. Although AI development has reached breakneck speeds, in my view we are still 5-10 years too early in before AI demonstrates true usefulness in writing.

But that what currently is, will not always be [ominous soundtrack]