I can certainly understand how Patriots* fans would be considered the benchmark for obnoxious fans. All my in-laws are Pats* fans, but it's not just Patriots* football they're interminably obnoxious about. Honestly, I think it just has more to do with being from Boston. Don't get me wrong, I love Boston, I love (most of) my in-laws, and I have blood relatives in Boston, as well. It's a wonderful city, and if you're there, and stop somebody to ask for directions, you'll get a far more involved description than you could imagine, and their life story. But, make no mistake-- the other side of that talkative, and friendly coin is some serious Grade A douche-baggery, that they themselves refer fo as being a "Masshole."
So, fear not. There have been other teams that have achieved sustained success in the history of the NFL, that didn't fall into a pattern of being insufferable dickheads. Believe it, or not, there's been a saying in other parts of NFL fandom that states: "The best thing about the Bills, are the fans." I think that will continue, even after a Super Bowl, or two.