Come on, man - name the names! You are amongst friends here. Hehe.
This is something I often ponder, partly because I recognise that knee-jerk reaction in myself. I think it's something deeply ingrained from being a British working-class oik, no matter how much I try to pretend otherwise.
I can think of a few examples, particularly from literature, where discovering a writer came from a position of financial security made me question my opinion of them, or at least reconsider how I related to their work. But ultimately, it never really changed my appreciation of the work itself. So this kinda echos what Mikko said about Juntaro.
Dennis Cooper is one example. He came from a wealthy family, his mother paid for the printing of his Little Caesar magazine in the 1970s etc. Learning that initially made me look at things a little differently, but didn't diminish the work itself in any way. Although, when I met him, my girlfriend's immediate reaction afterwards was, "That guy's a total prima donna." Hehe.
I suppose that's where I land on this. Although, if I was really wealthy myself, I'd never touch a computer again and you'd never hear from me. Hehe.