I think the Valley was like this 10 years ago.
Anyway, I list that as an example because what you're talking about isn't actually an example of political correctness (which is, again, a shitty term for basic respect and awareness of social context). Humans like black-and-white issues. It's really nice for us to be able to put things in boxes. So when we perceive someone's action in a certain way, our gut instinct is to cast that entire person as that way. Do people sometimes take someone's rudeness (even if accidental) and brand them a racist, discarding all of their opinions? Absolutely. Do some of my family members hear that I voted for Hillary and decide that none of my opinions have value? Also certainly. Humans are dogmatic. "Political correctness" is an umbrella term for cultural sensitivity, and can (like any idea) be applied dogmatically. It is not fundamentally dogmatic.
Why would you want to do this at work? No well-run place will allow this because it makes for a hostile work environment.
You have roughly 128 hr/week outside of work to do those things