Maybe some fragile snowflakes should just get over their hysterical emotional need to feel comfortable, and focus on doing real work and getting stuff done. But by the same token, maybe some assholes should get over their pathetic emotional need to belittle others, and stick to what contributes to the work.
There is a principle for robustly implementing computer communication protocols called Postel's law: be conservative in what you output, be liberal in what you accept. I think the principle applies equally well to human communication protocols.
Also, it's possible to have smart people and a failure culture and fail. If people are afraid of posing their ideas because they think they will be shot down as "stupid", that damages your culture.
I could probably work with you and not mind you calling my work stupid if you could also back it up. Learn something every day, you know.
I'd rather be happy letting people go than chasing some elusive target in the name of political correctness. Sooner or later, I will either end up being miserably alone or with enough smart people who just get things done. I think this risk is worth taking.