Culture encompasses a range of human behavior. Much of that, though it may not be tasteful to say, is tied to workplace performance. Pressure and desire to achieve, collective/individualist tendency, ethics and morals, conformity and deference to authority; if one is willing to acknowledge that cultures exist and vary, then one cannot deny that there will be strong correlations between culture and fit for particular roles. And as it happens culture correlates with nationality, race, and socioeconomic status - because parents and communities generally pass culture on to children.
At some point in the near future neural nets trained to predict human performance will undoubtedly condition on priors like nationality, race, and socioeconomic status, even indirectly if they are not explicit data points. What then? Will we continue to bend over backwards to deny reality in favor of a false Utopia? What happens when these trends suggest different interventions for medical conditions? Different learning environments? Different reactions to authority and punishment?
Edit: I don't understand the downvotes. Why use data analysis tools if you're just going to ignore the results you don't like? How do you expect to solve problems like inequality if you aren't willing to explore their actual causes? Is there something illogical or factually incorrect in my comment?