Like a little kid in a supermarket, David Chalian throws a fit that there are people who disagree with the media narrative. People like Chalian believe that they are the arbiters of truth. CNN tells you what is true or not and by God you better do as you are told. He is frustrated that CNN no longer 'controls' the truth. He is frustrated that people are exhibiting independent thought.
It is not so much the disagreement that infuriates him. It is more the disobedience of people not thinking as they are told to think that has him losing his mind.