Even though I mostly take a "white X" as a metaphor for a lack of diversity (of opinions and mindsets), I don't think most people do. These people aren't assholes because they are "white X", they are assholes because they are bourgeois stuck in their echo chamber.
And they are bourgeois because they are white. Or put in another manner, with the same brain and willpower but another skin color (which usually means being of another economic class as well) it would have been much much much more complicated for them to be some snob bourgeois.
> (which usually means being of another economic class as well)
Class seems to be the determining factor, really. Europeans had a couple environmental advantages early on [0] that allowed them to monopolise the world's resources, which were never fairly redistributed.
The current bourgeois are bourgeois mostly because their parents were, much less because they had the advantage of being white when building their wealth. There are of course outliers and ethnicity does have an impact, but overall there is very little social mobility anyway.
Exactly, European (aka "the whites", but I don't want to enter into what's white in the US vs rest of the world) had some advantage, they used it, gained more power and as everybody with power does, hold on to it by all their means. And even if rich families or dynasties come and go, the accrued wealth tends to not move too much. And it moves through generations, as you pointed out.
Even though I mostly take a "white X" as a metaphor for a lack of diversity (of opinions and mindsets), I don't think most people do. These people aren't assholes because they are "white X", they are assholes because they are bourgeois stuck in their echo chamber.