Of course there's a good reason for that fad - scientific racism is a pseudoscience that was created in order to "prove" the inferiority of races and to justify colonialism, slavery, racism, social Darwinism, and racial eugenics.
https://en.wikipedia.org/wiki/Scientific_racism
The correlation between race and IQ is openly "admitted" right there in the into paragraph of the Wikipedia page! If academia is "hiding" it they sure are doing a bad job. - https://en.wikipedia.org/wiki/Race_and_intelligence