From what I've read (admittedly not the whole thing, it was a bit long), it seems to suggest that calls for civility are all attempts to divert the issue or to assert your superiority, and that snark is better. The author really seems to dislike anyone who tries to discourage nastiness, and assumes they must be arrogant and controlling.
I take issue with that. It's entirely possible to be irritated by how often discussions devolve into pointless, vicious bickering without being arrogant or simple-minded. Likewise, it's possible to state your negative opinion of something without resorting to rudeness. People sometimes mistake being a prick for being straightforward and honest, when it's usually just an attempt to publicly assert your superiority by mocking and humiliating your opponent. Or, more charitably, nastiness results from anger getting the better of reason. There are rarely good reasons for being vicious to other people. What's the point? It'll make it harder to persuade people, since upon being yelled at they'd rather yell back than roll over and lick your boots. It won't make you friends; if anything, it can cost you friends. And it will make you enemies. Moreover, it just leads to an atmosphere of bitterness, rivalries, hatred, and anger, and that's not very pleasant. I'm sick of it. It's inefficient, self-defeating, and stupid. Why bother with it?
It's also telling that such bitterness is most common in online, anonymous places full of angry young males. CFC is definitely one of those places. People are nicer in person, and even on Facebook, where they may know each other and where there may be real-life, offline consequences. In an online, anonymous setting, you can be a prick all you want and you'll only face minor consequences on that one website. It also seems to me that young males, like the kind that dominates CFC, tend to be angrier and more confrontational than other kinds of people.
And before I get accused of being arrogant for some reason, I'll have you know that I act mean and snarky, too. I was mean to begin with, CFC-OT (and WH) encourages an atmosphere of nastiness, I act nastier, and it strengthens that atmosphere of nastiness even more. I make CFC a worse place by being a jerk and playing the rudeness game, and it makes me worse by encouraging me to be nasty.
Now, I'm not suggesting that we all sit around gently talking over tea. But maybe, just maybe, we should ask ourselves what sarcasm and rudeness will accomplish, and instead use more efficient techniques of debating.