Wait a minute - are you asserting that people who hate jazz are capable of perceiving the current crop of jazz musicians are mediocre and therefore any sense of superiority pisses these people off because they can tell that jazzers are 'full of it'?
That's completely ridiculous. Non-jazz fans, even self-proclaimed "haters" of the music are going to recognize that the current group of "mediocre" jazz musicians are in fact mediocre. Maybe, just maybe, they just reject that sense of smug superiority from jazzers, and don't have an f-ing clue about the music itself.
I think you are "overthinking" Dan.