"And I believe there is good evidence of both sexism (including sex stereotypes) and real psychological sex differences (some of which may be evolved) to be causes of the gender gaps across occupations,"
From the start of the memo: "Differences in distributions of traits between men and women may in part explain why we don't have 50% representation of women in tech and leadership"
They are saying the exact same thing? In what way does the scientist disagree in concrete words with things that is actually written in the memo?
Also, to avoid further misunderstandings...
Quote from link in the Wired article to Psychology Today: "Using someone’s biological sex to essentialize an entire group of people’s personality is like surgically operating with an axe" This is not what the memo did, as far as I can tell. See the quote from the memo again. He is suggesting that "biological sex" (the scientist's words) MAY IN PART explain why the split men/women is not EXACTLY THE SAME (sorry for caps).
Do you see how the scientist never actually comments anything concrete in the memo, but only concepts that are related?