I think it works like this. In MLC the suppressed emotions of decades break through, but they seem like reality, not emotion.

These are people who do not deal well with authentic emotion, so because they have these feelings, these must (in their view) be grounded in fact.

That isn't the whole story, but I believe it is a part of the jigsaw. At another level they know it makes no sense, but they bury that, and they are good at burying things that are inconvenient. . . . .