I work in tech. Our engineering, development, and QA teams in the US are almost exclusively male. Our company also has teams in India. Our engineering, development and QA teams in India are split nearly evenly between female and male.

What explains the difference? Biology? Nope. Culture. Probably because India doesn't cling to childish binary gender concepts like  "Strong Football Quarterback" vs "Beautiful Birthing Princess" like we do... and by "we" I mean American guys like you. 

Google, a leader in innovation, doesn't need a troglodyte like James Damore around. Good riddance to him. Archie Bunker's days are over, regardless of how many Chinese-made MAGA hats sit atop the pointy heads of  aggrieved man-babies.