Pathological extremes at both ends are still pathological, the correct response to an extreme is not its opposite, but a reasonable alternative.
It is entirely possible to hold a firm stance on what you think is the correct approach without being a jerk. It is equally possible to create a friendly atmosphere without acting like a used car salesman. I think you're reading more into the GP's statements than was intended.
If that isn't what you're implying, then it seems you are putting up a false choice between merit and people skills.
In fact, I am suggesting that your notion of 0-tolerance for assholism is an extreme, no better than complete endorsement and rewards for assholism. If you are not suggesting 0-tolerance for assholism, then I appologize, it just seems that way since you respond to call for moderation and some tolerance with a rejection of that principle.
Maybe your "nice guy" teammate doesn't actually keep the production db running correctly and who cares if the "asshole" has to cleanup. It really shouldn't matter that to not get blamed the "asshole" needs to do the work themselves. Maybe you send some e-mail not knowing what is going on and that sends the "asshole" up the wall. Heck, you did the "asshole" a favor since the "asshole" needs to learn a lesson(2).
1) author of article says all "assholes" are guys, which I find quite unbelievable.
2) add one of the "asshole"'s parents getting cancer and I've seen that one (with sleep deprivation)
For any given job, there are hundreds of other equally deserving candidates who aren't jerks. Getting fired gives assholes a chance to learn their behavior isn't acceptable, and is only fair to the more-deserving candidate who then fills the position.