Is that you can see, very precisely, what the person generating it was hoping to accomplish through the prompt. I wonder if seeing the image and seeing below it like "attractive white woman mother sympathetic Rockwell holding [product]" would do anything to people's awareness of the attempts there in, like, advertising or editorial illustrations. Would requiring people to publish the prompt change how they generated images? I dunno. Interesting.
Also interesting to think about how the process of writing a prompt might make explicit some things that illustrators do subconsciously. Although I imagine a lot of that is already baked into the models through the trained bias... Things like linking "sympathetic" and "white" are probably already encoded in there.