> I mean, it's a fun edge case, but I'm practice - does it matter?
*in practice, not I'm practice. (I swear I have a point, I'm not being needlessly pedantic.) In English, in images, mistakes stick out. Thus negative prompts are used a lot for iterative image generation. Even when you're working with a human graphics designer, you may not know what exactly you want, but you know that you don't want (some aspect of) the image in front of you.
Ie: "Not that", for varying values of "that".