Why are covers becoming increasingly misleading?

You'd have thought that with AI, having covers that actually depict LIs in the book instead of some generic blond, would be easier? Instead, the bait and switch feeling is getting more common?

Is it just cynical marketing? Laziness? Poor communication between author and publisher?

They say not to judge a book by it's cover, but if I read a book with a cover that's completely irrelevant to the story, I don't think anyone should be predisposed to leaving a positive review.