Do you understand the point that is trying to be made? Who do you think that such a law really affects?
I certainly think I made it clear in the very paragraph you quoted.
First of all, the simple carrying of a gun doesn't actually hurt anyone. It's not like a law against murder or theft, where if you break the law you are actively interfering with the life, liberty and pursuit of happiness of another, along with leaving behind evidence that proves a crime has been committed. There is nothing like that with a law against carrying, it simply adds another charge to the docket, but what does that do to actually deter or even hinder a criminal with an intent or willingness to commit a murder or theft?
Instead of trying to bother with attempting to poke fun at the point, why don't YOU tell me what you, as a criminal, would do if they saw such a sign?
Let me ask this: Do you think that the signs declaring that school and theatre that were shot up as being "Gun Free Zones" hindered the people who shot them up or the people that got shot?
I suspect that they certainly took those signs as a indication of little to no resistance against what they were planning to do, and the only people who would take those signs to heart are people like you or me who follow the law. I'm not saying that is not a reason to have those signs present, but it certainly didn't help, did it? And attempting to pass laws that prohibit carrying would do no better at actually preventing a criminal or one who has the intent to do harm as suddenly having an epiphany when they see that sign or are aware of that law. It'd be nice if that were so, but that is not the reality.
Instead of making pointless laws in the name of, "Well, at least we did
something" that trample on personal freedom for the purposes of political rhetoric and little else, enforce what is already there or enact preventative programs that stop the behavior or intentions before they become a problem.