This is stupid and demoralizing.

Beliefs don't make you partial or impartial. Impartiality is when there is a conflict of interest or pre-existing bias for/against a particular person (i.e. friendship, grudge). There is no expectation for people to be mindless robots incapable of subjective thought or belief.

This is what happens when someone internalizes the abuse from the Left and behaves as if they're ashamed of their beliefs and principles.