As I mentioned earlier, 'insolence' could be one contributing factor to the lack of appropriate, professional interaction exhibited by a small minority of GA pilots when operating in CTAFs.
I am sure that Lead Balloon enjoys a faux aura of expertise while discussing piston engine operating principles and airmanship at the local aero club whilst jabbing his wine glass in animated excitement, splashing it's contents on those around him as they once again roll their eyes.