Well, me and the hubby definitely would not be considered yuppies. Blue collar jobs and living in a doublewide in Cosby is pretty non yuppie. I have met the type that you are talking about though. The ones with the "attitude" But having more $$ to spend on gear don't make them better fishermen. That takes skill and the cost of that is practice and dedication.
I think people like that have that kind of snob attitude in whatever they do, be it fly fishing or anything else. They are missing the real beauty of the sport.
"To go fishing is the chance of washing one's soul with pure air, with the rush of the brook, or with the shimmer of the sun on blue water."
- Herbert Hoover, devoted angler and thirty-first President of the United States.