Personality traits that are intrinsic, thus suggesting women are intrinsically less inclined to engineering. (Note: I don't agree with the thesis, but that's the implication).
OTOH personality traits aren’t distributed equally between men and women. Personality traits don’t impact your ability to do engineering work, but they influence What type of workplace culture / communication protocols in which you can thrive. Damore advocated for making engineering cultures more accommodating to people who have personality traits resembling the distribution that women exhibit.
https://slatestarcodex.com/2017/08/07/contra-grant-on-exagge...
https://slatestarcodex.com/2017/08/01/gender-imbalances-are-...