It's not even that, it's still the basic norms of not bringing your sex life to work. I'm not going to be ok with random hookups or graphic depictions of spousal sex from completely vanilla missionary people.
It's not liberating, it's fucking weird.
The same reason I accept and understand everybody has bodily functions and wouldn't embarrass anybody for asking for toilet paper or a tampon but still fully expect them not to shit on the floor in front of me.
I think this is part of the totality of work culture in SF/SV, where all your friends and social life comes from work. Personally, I like to know as little as possible about my co-workers’ lives (unless I specifically choose otherwise).