Blue collar is just the runner's way of saying I have a bigger, manlier dick than you. aka Look at me, I rose from nothing, I use shitty shoes and cotton t-shirts and never have eaten a powerbar ever and I still kick your ass.
It's dumb. Trying to further exclusify a sport that needs no more isolation, trying to exile newcomers for their newfangled gps devices and nike frees. Trying to appeal to the working-class man with small snapshots of a media-friendly runner's personality.
What the fudge. Show up on the line. I don't give a damn what brand your socks are, whether you have clima-lite or dri-fit on or not, whether you ate whole-wheat pasta with organic tomato sauce the night before or a 48 oz steak. Do your running the way you like. Race me intelligently, with balls, and train with dedication and you'll earn my (and others) respect. Not by defaming others for the way they choose to live their lives and enjoy their pasttimes.