How is that misrepresenting what he said? Yes, it is true that there will always be individuals that are deviations from the norm. That is already implied in either scenario.

Here is a direct quote from the memo:

"I’m simply stating that 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."

This sounds exactly like what the above poster summarized: "women and men are biologically different in their suitability for different roles".