Nationality at birth, parental income, skin color, height, highest degree completed, etc. are also highly correlated.

But yes, I recognize the "like a scratch-off lottery ticket which might reveal that you should be a Big Winner In Life" psychological appeal of IQ tests. Especially for people who are not actually experiencing any of that Big Winner in Life stuff, or have other issues. Such as needing humanity to be a Well-Ordered Set ( https://en.wikipedia.org/wiki/Well-order ) with a convenient and easily-rationalized "who gets to look down upon whom" metric.