For the same reason they hate AI image generation. It removes the power and sway people (in general) have over each other since instead of putting up with some crazy artist or date, you can get your fantasies catered to by technology. It's just that men are more visually driven. If there was an AI Chad robot with a 10 inch hog that ejaculated chocolate and would go on hour long conversations catering to every woman's needs then I'm sure they'd like it just fine.