It's not about being successful, or having lots of money...but how that money is being used to tilt the scales. I'm surprised that you call it "your" Democratic Party, then turn around and call progressives attitudes European (and latently anti-semetic), as if the Republican Party has ever fought for your rights as a gay man.
You're correct that there's a lot of poisonous class-obsession, which finds its way to the political class, but FFS follow the money trail when you want to "wrap" your head around what's happening in America. Do you really think you should have to BUY your rights on the back of a wealthy benefactor?