I have to disagree slightly with your description.  Even poorly educated and uninformed people are capable of spotting B.S. when they see it.  I read something about an aboriginal hunter who was completely uneducated, yet who shined with intelligence and competence and integrity.  The supporters Coaston are describing are people who make up their own reality and cling to it, no matter how much the facts try to push into they story they've made up.  She's talking about people who deceive themselves so they won't have to change their minds.