LOL! Those stupid Gun-free zones signs are the height of stupidity.
However, you may be onto something. I bet there are people who will pay for such signs. LOL!
I’ve seen those yard signs, but the winner that made stop and stare in disbelief was a bumper sticker in a retirement home parking lot that said, “I am unarmed. Please don’t hurt me.”
Years ago in Denver, at a Million Moms counter-protest, someone had some very nice professionally printed yard signs saying just that, and was offering them free to libs leaving the Million Moms march. Had no takers. Wonder why?