Per 2016 US Census :
> Black or African American = 40,241,818 (12.6%)
If you really believe that under-represented minorities are not at a major disadvantage in our society, facing multiple layers of explicit and implicit discrimination against them, then, in my opinion, you're part of the problem.
> the lack of female representation in tech...
Likewise, if you took the pseudo-science  by disgruntled engineers for granted, and believe that the lack of female representation in tech is due to some ridiculous genetic predisposition, ignoring 50+ years of biases and stereotypes, on top of open sexual and moral harassment, then you're part of the reason for the divide. It's exactly this kind of thinking that creates gender stereotyping and legitimizes the systemic sexism in our industry.
If you're interested in understanding more about the true root causes of our gender disparity, a good initial read is "Brotopia: Breaking Up the Boys' Club of Silicon Valley", by the amazing Emily Chang . No pseudo-science required.