When there is no relevant evidence of the alleged gender differences and the purpose of the allegation is to defend a gender imbalance in the workforce it's difficult to describe it as anything other than sexist.
And yet, unless and until the intake and graduation levels of Comp Sci type courses is evenly mixed, the workplace balance among engineers cannot be so. Distorting hiring practices to game the outcome is more or less what Damore was complaining about, even if he chose to go a little off-piste in constructing his argument.
Unusually, the imbalance between genders garners no concern when its jobs the middle classes look down on, like bin man, because it is almost entirely men that do that job.