This is all my speculation, so here goes.
I definitely think there is some of the "moral superiority" among some Indy fans..or at least there used to be back around spygate and the year of 2007 when the Patriots were demolishing everyone and "running up the score" (which, I mean...it's professional athletics people...this is not little league) Heck, ESPN's Greg Easterbrook promoted that narrative in this article.
http://sports.espn.go.com/espn/page2/story?page=easterbrook/071023 (Google/Evil) but I think to some degree that has blown over. I haven't heard of spygate in forever...but that's just me.
Belichick, as others have mentioned, sometimes isn't super engaged with the media (from my understanding he's a lot more open to the local media), so that casts a light on him (not that he cares, nor should he IMO) that can rub people the wrong way here "in the good ol' Midwest."
Plus the Patriots have been super successful. One can argue that if a few things go differently (2003 Indy vs Pats at the RCA dome when Edgerrin James was stopped at the 1 yard line in the regular season game...leading the Pats to have home field advantage in the AFC champshion game) that things could have turned out much differently for the Colts
http://sports.espn.go.com/nfl/columns/story?columnist=clayton_john&id=1674752 I think there is frustration that the Colts could have been the team of the 00's except the Pats were in the way. (Michael Jordan says hello to the New York Nicks, Pacers, Jazz, Trailbazers, Suns, etc.)
I think all regions of the country have narratives about them...west coast people are "laid back", mid-western people are "family friendly hard working", east coast people/News Englanders are "rough' / 'gruff' and not friendly....blah blah blah...if advertisers/media can get people watching/talking about it then they earn money.
I also think most of the non-Patriots fan (at least the ones I interact with) are tired of the Patriots because they win so much. But that is the case with most franchises who win a lot. Re: Doyle...I've heard of him before, but had no idea he is the local guy. I tend to ignore most that stuff, but I'd be surprised if 20% of Colt's fans knew him...maybe it's because he is newer to the area.
[SIZE=14.3999996185303px]How much of the fan base would be considered "knowledgeable" is hard to say. I do think you're exactly right, however. The people that know less about football tend to focus on those things, and not the X's O's, etc.[/SIZE]