A lot of workplace cultures survive and even encourage discussiong differing views without making every place a battleground. And even encourage civil exchange of views between people who hold different views.

It's in vogue to use the ideas from the Nonviolent Communication book to make this work better. But those ideas are of course politocal.. as is the debate on whether to allow political discussions.

Also it's pretty hard to separate political discussions from work if you're doing something that impacts people's lives. (I'm leaving out jobs where the societal impact is clearly negative, there discouraging discussion might be rational for the employer)