Can you imagine being so sure that your ideology is an infallible guide that you would go on your show — the TV show that bears your name — and scream hysterically to the world that a particular drug will kill people, because you hate the person who said that drug would help people.
And then, a month or two later, comes the news that you were completely wrong, utterly wrong. There isn't the tiniest wedge of wiggle room. Your hysterical ranting was perfectly opposed to reality.
That is precisely what Neil did. They should fire him.