Earlier quoted context omitted.
On pages 3 and 4 he claims that these differences exist (emphasis added): - On average, men and women biologically differ in many ways. ...the distribution of PREFERENCES and ABILITIES of men and women differ in part due to biological causes and that these differences may explain why we don’t see equal representation of women in tech and leadership. - Women, on average, have more: Openness directed towards feelings a…
For what it's worth, he addressed your first point in a reddit AMA. More or less, he thinks smart women are more verbally gifted, so they have more viable career choices on average. If that's true, they may they pick apparently nonverbal jobs (programming) less often. https://www.reddit.com/r/JamesDamore/comments/6thcy3/im_jame... "For high achieving women, they tend to be good at both quantitative and verbal skills.…
That said, it does sound as if Google is engaged in illegal hiring practices.
As someone who went to a private engineering school, formerly boys only and co-ed in the past decade, there are many brilliant women in engineering. All of this spouting does them a huge disservice. As Damore himself admitted in one AMA answer, it might by "cultural." I believe that is a far more acceptable argument than evolutionary psychology and political ideology.