Except there's plenty of old-money (hereditary class) in the US that looks, talks and acts exactly like the "class" structures you're claiming are very different from those in Europe. You're arguing semantics because "it's different" in the US, which may be superfically true, but not meaningfully so.
Whatever you want to call it, there are de facto class structures in the US that operate as the functional equivalents of class in Europe. You are either born into these circles or you remain outside of them (for at least a few generations). Wealth is only one part of this mix, and while it certainly does pay for your tickets into elite events, it does not buy you into the circle.
> social class in USA is fluid and can change
And this is one of the major false-hoods that people believe to be true but simply isn't. Americans in particular suffer from this belief. Social mobility is lower than most people expect, and the trend has been heading downwards for years.
Whatever you want to call it, there are de facto class structures in the US that operate as the functional equivalents of class in Europe. You are either born into these circles or you remain outside of them (for at least a few generations). Wealth is only one part of this mix, and while it certainly does pay for your tickets into elite events, it does not buy you into the circle.
> social class in USA is fluid and can change
And this is one of the major false-hoods that people believe to be true but simply isn't. Americans in particular suffer from this belief. Social mobility is lower than most people expect, and the trend has been heading downwards for years.