Earlier quoted context omitted.
This is a strawman. Neither I nor the manifesto author has argued in favor of sexism. Why did you call out "white men" in an article about representation at Google? It doesn't make any sense when white people are underrepresented at Google. edit: Now the parent has edited their comment to remove "in favor of sexism".
Here is where the author argues for sexism (from his TL;DR) > 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. Discrimination to reach equal representation is unfair, divisive, and bad for business. The implication here is that equal representation of women at Google is bad for business. That women aren't in tech and…
This is an incomplete picture of what that statement says. It does not say that 50% representation would necessarily be bad for business, but that discriminating against men to achieve this goal would be bad for business.