I find many people are against "fake politeness" just to have a reason to act like jerk when they know they can get away with it. Contrary to your opinion, there are plenty of people out there who are genuinely nice.
Plus, there is a difference between disagreeing with someone and spitting in their face or threatening physical violence. In the context of this article, I don't think the idea is that we need to avoiding offending people at all costs. It's that we tend to reward the "hate" to the exclusion of other forms of opinion and that we are quick to judge people at a superficial level based solely on what someone else heard from some blog they stumbled upon.
So basically, this isn't about political correctness at all, and looking through the article, I'm not sure how you thought it was in the first place.
Plus, there is a difference between disagreeing with someone and spitting in their face or threatening physical violence. In the context of this article, I don't think the idea is that we need to avoiding offending people at all costs. It's that we tend to reward the "hate" to the exclusion of other forms of opinion and that we are quick to judge people at a superficial level based solely on what someone else heard from some blog they stumbled upon.
So basically, this isn't about political correctness at all, and looking through the article, I'm not sure how you thought it was in the first place.