The post might have been trying to rile people, but it certainly wasn't written in a way likely to do that. And the problem isn't when people say things that are seen, and sometimes meant, as unpleasant, it arises when unpleasantness is met by unpleasantness. Disagreement is fine, disagreeableness rarely works out well.   And to start with, if posts were intended to rub people up the wrong way, that was not the response they got. Which is the way posts that rub as up the wrong way should be treated.

Turning the other cheek is difficult in some circumstances, but not really in a forum like this, where the delay imposed hy writing gives us time to resist the impulse to strike back verbally that can arise in other circumstances.