It’s kind of like in the prisoner’s dilemma. That kind of leftist is only cooperating (which in a perfect world would be the best option) but because of that is easily taken advantage of. Conservatives mostly see stuff as a zero-sum game and always choose to defect and make sure they at least don’t lose which in the long term is also horrible.
People ‘just’ need to accept that the world is not black and white and neither perfectly good nor completely bad either and that you achieve more with cooperation but can’t be a pushover either…