He provides no evidence to back the conclusions he draws from that data though. It reminds me of some articles or posts you might see briefly gain traction on the internet where the author starts from a point backed by one or two reputable sources and proceeds to use those references to back an argument that lies well outside the bounds of the original data.
As one of the authors of a paper cited in the memo puts it:
> In the case of personality traits, evidence that men and women may have different average levels of certain traits is rather strong. [...] But it is not clear to me how such sex differences are relevant to the Google workplace. And even if sex differences in negative emotionality were relevant to occupational performance (e.g., not being able to handle stressful assignments), the size of these negative emotion sex differences is not very large [1]
[1] http://quillette.com/2017/08/07/google-memo-four-scientists-...