Something like this really highlights AIs inability to negate things. Like, search for "no lace hiking boots" and you get hiking boots... with laces.

Negative prompts are a thing, right? But this site just gives a box for the positive prompt.

Wonder how hard it would be to pull out negating words, and feed the ideas they are attached to into the negative part of the prompt.

Yes. See also a "wristwatch with no hands".

https://anycrap.shop/product/a-wristwatch-with-no-hands

The watch in the image has hands, but the text below seems fine (if a little silly):

"This wristwatch presents timekeeping in a non-traditional manner. Rather than displaying hours via hands, it projects temporal coordinates directly onto the wearer's retina through advanced ocular stimulation technology. The watch face remains blank at all times, except when illuminated by subtle flashes that indicate elapsed seconds."