At Google, we're regularly told that implicit (unconscious) and explicit biases are holding women back in tech and leadership. Of course, men and women experience bias, tech, and the workplace differently and we should be cognizant of this, but it's far from the whole story. On average, men and women biologically differ in many ways. These differences aren't just socially constructed because: 
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Google company policy is in favor of "equal representation" of both genders. As the existing representation in tech jobs is unequal that policy has led to hiring preferences, priority status and special treatment for the underrepresented category, in this case women.

The author says that this policy is based on ideology and not on rationality. It is the wrong way to go, he says. Basic differences, not bias, are (to some extend) responsible for different representations in tech jobs. If the (natural) different representation is "cured" by preferring the underrepresented, the optimal configuration can not be achieved.