Would YOU not be irritated by a fly buzzing in your ear? Not just once, but time after time after time... A few bad posts can be easily ignored, but a constant stream of total bunk is hard to ignore- especially when said person is very loud about it.
Most of us have tried to patiently wait him out, then offer constructive criticism, them politely change the subject... Still the buzzing continues.
At some point, comes the inevitable time to swat.
Hardware just loves pushing peoples' buttons- whatever they may be. The most popular button is to just spout mindless drivel that one company "rules" and another "sucks" for whatever unfounded reasons he can make up. He's just pushed too many people past that redline... even VERY patient long-time members here.
For the most part, this isn't mob-justice; it's a lot of seasoned Ananders getting downright ticked that there's one guy in particular who just does't wat to "play nice with the other kids".