It has more to do with culture. Compare them to the Japanese, who are just as High IQ yet they are socially conservative.

White Nations were the first to embrace Egalitarianism, so it makes sense that you'll also see the smartest members of society want to push for equal rights/feminism/LGBT/welfare etc.

It's Whites being too kind, that their own kindness comes back to kill them. But that doesn't mean IQ is useless.

People forget that on the opposite spectrum, the National Socialist government of Germany was ran by ostensibly the smartest people in history.

https://seanjkernan.medium.com/the-results-of-the-nazi-iq-tests-c3a5e442f37c