NOWHERE in Charlie’s post to he make any type of insult as implied(correct me if im wrong).
I think Redleg based his assumption on the fact that Charlie used ALL CAPS to make his point, generally considered on the internet to be shouting (look, for instance, how popa refuted Charlie point by point, [civilly, it should be noted] using italics).
I think Charlie just meant to deliniate his words from the words of the one to whom he was responding, though. ALL CAPS is easier than italics. As often as I disagree with Charlie, sometimes passionately, he does indeed write very civilly.