Thanks for letting us know that some people think it's humble to be xenophobic. Funny thing: my in-laws are from the Midwest, and they've never spoken like this.
Jared Fogle (the Subway creep) went to my high school in Indiana, and if he showed up to a reunion after getting out of the pokey, he would not get the same reception as Roy Moore currently gets in Gadsden, Alabama. Fogle couldn't win an election for county roadkill remover, much less senator for the whole state.
We don't rag on other regions as a matter of course, but we do judge them by their perceived shortcomings, even if we don't call them out on it.
And Midwesterners are stereotyped. We're small-minded, prudish, unfashionable, uncultured, suspicious, avoidant, passive-aggressive, and boring. We drink pop and weak beer and eat fried cheese. Didn't you know?
For instance, it seems like when the Midwestern region comes up[0], people usual mean the upper midwest and especially the Lakes states, which is weird to me as someone who's lived in Missouri, Oklahoma, Kansas, and Iowa, because down here we don't really mean to include Lakes states when we say "Midwestern". I mean, there's stuff there. Outdoors stuff. That's worth doing/seeing. That you can reach in less than one entire day of travel by car. Doesn't seem too Midwestern to me, or to have much to do with my experience of Midwesterness (I gather they'd disagree, which is my point). The Lakes states, including Minnesota and Michigan and at least the northern 1/3 of Illinois (and certainly anything East of Illinois) are a Western extension of the East from our perspective.
[0, EDIT] by which I mean when the region comes up in articles, or on the Internet generally.
There does seem to be a quiet arrogance about Midwesterners. Yeah, we're the most humble. Yeah, we're the best, we just won't tell you. ;)
It seems more like fake humblesness more then really being humble.
Our stereotype of ourselves: Rather close to the Midwesterners, minus the emphasis on agriculture. (Yes, we grow what we can where we can, but lack of water means that there isn't much. Agriculture doesn't dominate the way it does in the Midwest.) We say that we are self-reliant, independent, friendly (except maybe to outsiders), down to earth. We're fairly well educated, but we still have good common sense.