Nope, the US (especially the West Coast and Mountain States) is extremely non superficial in certain very odd ways: * Almost nobody cares what kind of car you drive. The richest people I know literally don't care and drive Subarus and Toyotas and Ford pickups. * Nobody cares about watches or jewelry. * Clothing? It's literally Costco or Walmart for people I know who have tons of money. Unless their wives/gfs/bfs/husbands buy them something fancy for their birthday. * Fancy wines and liquor? Wines yes, scotch yes. But it's not outrageous.

The things where you notice the money are private planes and nice houses/apartments (and multiples thereof) and art. And perhaps caring even less what people think of them.