As a personality researcher, I feel obligated to chime in and clarify that the memo wasn't stating that women are "neurotic", neither in the colloquial nor clinical sense, but that they are on average higher in the trait of Neuroticism in the Big 5 personality dimensions[0], which is a very specific and well defined term, and the scientific literature actually does support that statement when it is presented using those academic definitions. There's nothing opinionated about this, just as much as saying that men on average test higher in the trait of 'Conscientiousness' according to the same model; they're just population statistics based on the most reliable personality measure we have in the field of psychology today. It is a plain misunderstanding of the academic term to suggest that the memo says women are "neurotic" in any other way.
[0] https://en.m.wikipedia.org/wiki/Big_Five_personality_traits