I don’t think “rich” has anything to do with it.
There is a certain type of entitled person who would use food stamps to pay for Louis Vuitton luggage if they could. They rent instead of own and have "bills", but you see them driving $32,000 SUVs in strip malls all over America. The only difference between them and the McCains is a matter of degree.
It just seemed, from the quote, as if it was a, “I can’t believe people like this exist!” sort of reaction. This happens to all of us at times, of course. I’m not sure how, in my boring suburban life, I was always aware that, yeah, you ran into people like that. Babysat their kids sometimes, cleaned for them ;-).
People are responding as if I’d said something negative about Bristol Palin or positive about Cindy McCain, but it wasn’t intended to be a judgment of either: just a sociological observation.