Yes…this much is true. I have observed this phenomenon. Just the entire libraries of information they will ignore to protect their world views, is irrational. If you look at it from a thinker’s perspective, this makes no sense.
But, if you look at it from the perspective of raising a psychological defense, it makes perfect sense. Psychological defenses are almost impossible to deconstruct from the outside. It has to be an inside job; and that inside job unfortunately only happens when it becomes to painful not to do it. Most are a long way away from that point. I think they can lie to themselves about reality infinitely, because the truth, if it was ever truly faced, is just far, far more frightening, and especially to these people.