There are many places and times that people do not want to discuss the politics of the outside world. Examples could include while giving birth, while shopping alone at the grocery store, while sitting alone on a city bus, while performing surgery, while discussing your raise with your boss.

Just because someone does not want to discuss something here and now, doesn't invalidate that they have original opinions. Not everything is a dichotomy all the time. Plenty of people who are not fine with the status quo don't want to discuss it at work.