"Any statement that perpetuates female stereotypes is sexist, even an innocuous joke (or even a misconstrued joke in someone else’s private conversation)"
"Prostitution is sexist against women" etc
Um wtf? No these are not appropriate in a work environment. If you want to have a place with meaningful controversial discussion that's not the work environment.
I'm a lady and I honestly would feel uncomfortable if people were discussing these things at work. I really could not care less what other people's opinions are on these issues but I know I'm there to do my job as best as I can no get siderailed into lengthy controversial and highly likely uncomfortable discussions.
Suggesting that Google needs to be a place to comfortably voice off your random ideas is pretty irrational. It really doesn't.
Anyway, what does that even look like tangibly? Unprofessional... uncomfortable. It would not result in people agreeing with each other more just becoming less likely to like one another.