I'm lower-middle class. No hot water right now, but we've got electricity, internet, food on the table, and plenty of things to be grateful for.
I don't really care for rich people. Not to say I dislike all of them; I have plenty of friends who are well off. My best friend is pretty damn well set. I just don't like "rich people" as a concept or whole.
But when you go out and do graff, you're the same slime as everyone else. If some kid from the suburbs is willing to get his hands dirty, risk his shit like everyone else? Same props to him as the poor kids get, man.
As long as there's no ego associated to being well-off, I don't really see the big issue. Now say the kid's talking shit cuz he's got all this dope paint his parents bought for him, then yeah, I can see the issue there.
Otherwise, live and let live, make some dope shit.