With all due respect to the article's author, he makes a silly argument.
ALL fanbases have their fair share of idiots and arrogant blockheads, trash talking trolls, know-nothing bandwagon fans, "my team can do no wrong"-type homers, and sky-is-falling doomsayers on Mondays after a loss. Our fanbase is no different, and in fact because we have a ton of fans, we probably have a lot of these types. That's just the law of averages. But if that's true, it's also true that we have a ton of extremely knowledgeable, objective, courteous, and lifetime, live-and-die-with-the-Steelers type of fans.
You could visit any team's board, cherry-pick the "offensive" posts and ignore the objective ones, and come away with the conclusion that it's an unknowledgeable, arrogant fanbase. (This is an amusingly common practice on EVERY board in fact: to go to another fan's board and pull out an extreme post, so you can say, "look how stupid/arrogant/annoying the XXXXX fans are!") And because a large percentage of posters on rival teams' message boards are there for trolling (again, this is unfortunately true of EVERY fan base), of course you'll get a negative view of the fanbase.
The irony of course is that members of other fanbases may hold the same view (citing identical reasons) of the Patriots fanbase. And they're equally incorrect.
lillloyd