The next level up we start to see responses to the writing, rather than the writer. The lowest form of these is to disagree with the author's tone.
DH1: Hmm... Same author of the article and of the comment... :)
Honestly though, I don't think you should be too insulted. Everyone has moments when perhaps they aren't particularly prime to good comments, although I suppose it would be a bit better had pg said something along the lines of, "Support that instead of just saying it" or asked for an actual discussion instead of what seemed like a loud (from the caps) one-line outburst.
If anything, this illustrates the point from the current essay that it's easy to fall into the trap of responding to the tenor of an argument instead of the substance unless you pay careful attention. I expect we've all been guilty of this at one time or another.
You may or may not have meant it way, but thanks for the observation.
Edited to add: I hadn't seen pg's response when I posted this. Perhaps the observation is indeed superseded by the fact that pg's post wasn't intended as a refutation.