Take off your Bills hat for a moment and look at the coverage of Belichick objectively. He's the coach of a team that has won three super bowls this decade, so he's going to have more coverage by the media. Any other coach with his record would have far more positive press than what he has received, but many media members intensely dislike him. He doesn't give the sound bites that guys like Parcells does, he limits the access to players and other coaches, and he doesn't give them much to work with in his interviews. In other words, he makes the media's job harder when they need to come up with a column, and they hold that against him. The only reason their has been any praise at all is in spite of their personal feelings about Belichick, and getting past that and seeing the results on the field.
Now this comment I agree with, there is a sizeable portion of Patriots fans that tend to over react to criticism. There is a reason for that reaction, though. In my opinion it is a result of the way the media, led by espn, went over the top in it's coverage of spygate with a witch hunt mentality - whipping the masses into a frenzy with wild speculation. If your favorite team had been the recipient of that type of biased reporting, more of your fan base would also be up in arms over every negative comment as well.