This is a topic that keeps coming up in the comments. Commenters insist that the elite secretly believe in HBD because they are too smart not to see the truth, and the elites sometimes behave in a manner that commenters perceive to be consistent with secret belief in HBD, such as sending their children to private school.
This is like saying that religious people are secret atheists. A commenter might say “So-and-so is way too smart to believe in that Jesus nonsense, he must be a secret atheist.” But in fact, there are smart people who believe in the Jesus nonsense, and even more smart people who believe in the HBD-denialism nonsense, because people believe what other people believe and don’t really think for themselves. Fewer people believe in the Jesus nonsense because it’s no longer taboo to say that you don’t believe in Jesus. You can blog about it without getting fired from your job. Not the same with HBD.