That doesn't sound right to me. Visible wealth has always been something I've equated with "came into some unexpected money (probably not even that much) and immediately blew it" even when my family was not exactly wealthy. As I once saw it put on reddit, things like Gucci are what poor people think rich people buy. My impression has always been that rich people generally don't want to draw attention to themselves in the US either.
Celebrities may flaunt their wealth (and may distort people's perception of what wealthy people are like), but their whole deal is drawing attention to themselves so that makes sense.