Um, I used a phrasing that was intended to be slightly more interesting and less dry than "the idea that Mexico would not have violent cartels overnight if ...." - but it should have been obvious what I meant.
You're indeed the one who shifted the goal posts there. You suggested that prohibition is the reason reporters get their heads chopped off in Mexico. I pointed out that it's not the case; cartels do more than just drugs trafficking. You then requested I provide a principled argument for prohibition, as if that's a response to me pointing out a flaw in your own argument.
Mike didn't just shift the goal post, he packed it up, shipped it via fedex, and had it smelted.