As far as I can tell, all political fans are like this. If facts don't sit well with them they actively are in denial about them, and are therefore are not aware of them at all.
Most people are like this, not just political junkies.
Our worldview helps to define who we are, and so when you question the facts of someone's worldview, you're indirectly attacking their identity.
Once someone feels an attack like that, real or perceived, they put the walls up around their ideas and diminish their capacity to communicate.
I believe this is why when you confront people with facts that they did not know, or which contradict their worldview, many will try to come back with a personal attack. Because once you confront someone's identity, they will reflexively view that as a personal attack, not as a new set of facts to be assessed and assimilated.
The above can apply to all of us, including me.
As humans, we rely a lot for our values on emulation and herd signaling. We don't have enough time to get and process all of the facts before forming opinions. History and society are becoming increasingly more complex which it harder and harder for us to interpret context, forcing us to emulate and accept opinions faster than we can develop them thoughtfully and independently.
It's easy to spot bullshit arguments in the face of new facts. People will use terms like
kook
unrealistic
crazy
weird
dangerous
These opinions are stated as facts.
Imagine this conversation.
Person 1: I think 2 + 2 might be equal to 4 because 2 + 1 is equal to three, and it seems to follow logically.
Person 2: Your math is dangerous, and you're an unrealistic kook. If people do math the way you say, then Jim Crow laws will come back and America will get dirty bombed.
Whenever someone addresses the other person rather than his ideas, that's the sign of a weak argument, and in light of the above, a fragile ego which may be incapable of overcoming the reflexes of their amygdala.