Groups of people are comprised individuals, with large degrees of variation in any group. Using averages can be important for some things, but context and nuance matters a lot. Not every white person "holds most of the wealth and power". Most don't have any. Perhaps it increases you chances of acquiring wealth or power, but that's a completely different thing than supposedly holding it just because of some "membership" based on ethnicity, religion, sex, or anything else.
This is such a narrow view of the world; undoubtedly it makes sense if you're raised in some urban middle-class family, but a lot of white people's experiences are vastly different from that, and not only are these experiences ignored, they're met with strong hostility. Why do you think rural US, often impoverished white communities who certainly didn't get the best deal, are so hostile to all this kind of stuff? Hell, even "racism" (for lack of a better term) is a thing, "three nippled inbred cousin fucker from Alabama" and all that.