Another slant – why don’t yeshiva guys respect the rest of us enough? After all, one of the things you’re supposed to learn in yeshiva is respect for other people. If the yeshiva guy looks down on the working guy who’s paying the bills because he is studying Torah and the working guy is only kovea ittim, then maybe the working guy has a taineh.
Something else I’ve seen – a bachur is home for Shabbos, and corrects his father at the Shabbos table in a very superior manner. Since when is it even permitted, much less simple derech eretz, to “correct” your father/mother openly in public?
Maybe the shoe is really on the other foot, and it’s the yeshiva bachur who needs a little musar.