The level of heritability of many traits is far from settled, AFAIK, and given the long shadow of Nazi racial pseudoscience, there is a certain air of suspicion around anyone who researches the topic of heritability too eagerly, at least in the West; China does not seem to have this particular taboo.
And I am not even surprised, the possibility of governments latching onto this and "streaming" people towards whatever they are found to be gifted at, cannot really be dismissed.
That traits for fitness are heritable? That is "a thing"? Hmmm, you might be onto something here.