To some, that might mean “No Illegal Drug Use.” Or to others, “No Diabetics.” Like when I carry my Beretta past a “Glockbuster” sign. I agree that the graphics should not carry the force of law.
And I’ve not seen any 30.05 signs, but there do seem to be more 30.07’s evident. I’m fine with that, as it means tacit approval of concealed carry.