Your quote is literally the definition of
cognitive dissonance.
Cognitive dissonance occurs when new information that conflicts with someone’s deeply held beliefs causes that person to feel mental discomfort. People will go to great lengths to alleviate this discomfort by downplaying or distorting the facts or simply filling the void with false information like conspiracy theories.
It is prevalent in people who believe sweeping false narratives based upon incomplete information.
@Kelly Jo here seems to prefer conspiracy theories to resolve this inconsistency.
Examples of reality clashing with doctrine: Ron Paul
and then a week later his son Rand Paul, a US senator, was diagnosed with Exactly that, Covid-19. Or a conservative couple declaring the Coronavirus crisis is fake news perpetrated by Liberal media while, at the same time, cancelling their Alaskan cruise out of “an abundance of caution.”
In these times of political polarization where people completely believe their political party’s propaganda that is consistent with their world view — but inconsistent with the facts — cognitive dissonance is a widespread affliction.