Damore's argument looks more like this:

An average man is incapable of being in tech. An average woman is incapable of being in tech.

There are men and women at the tail who are capable of being in tech.

Because of the difference in averages, there are fewer women than men who are capable and want to be in tech.

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Collapsing all that to "women [on average] are biologically incapable of being in tech" is disingenuous. Using words like "incapable" implies binariness, ignoring the continuous nature of distributions.