It seemed to generate an honest discussion at Google until it went viral and the PC wolves got involved:
Quote from internal google response: 
"I put almost agree on go/pc-considered-harmful-poll. I thought it needed way more citations. Also, I would have left off anything about “marxism”. You could have made the same points about diversity/psychological safety without them. Adding them in just made the doc seem political. Although, I don’t think either would have changed the reaction.My biggest concern is the number of people who don’t understand how distribution differences aren’t stereotypes and can’t be applied to individuals. It’s basic statistical logic. For example, men’s average height is higher than women’s average height. You would never just assume a woman can’t be taller than 5’9”, but you would expect more men to be above 5’9."
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But clearly Google doesn't want their staff "perpetuating "gender stereotypes"  #becauseit's2017.