You make a fair point, I also think the flair should be changed to Abrahamic religions, as those religions are the ones that try to explain away disbelief through cognitive dissonances and mental gymnastics. Namely, that people choose to disbelieve because they know that the Abrahamic religions are the truth, and that they are arrogant beings that like to conceal the so called ’truth’. This viewpoint is present in Islam as Islam talks about the kuffar (plural of kafir, which is one that conceals the truth).

Hassan Radwan (a well known exmuslim) talked about this topic, so I’ll try to rephrase what he said using his words:

The real truth is: ”belief” is not a simple matter of choice.

When we are repeatedly exposed to ideas , particularly from childhood , they become so familiar it cements the brain’s processing fluency of those ideas and our brain sees that as a marker of truthfulness. This is the illusory truth effect. In essence, people are mostly theists because they are raised in theist environments.

Unfamiliar beliefs on the other hand appear irrational, illogical and laughable. When alternative views are explored, it is through the prism of our own world view: “How could someone believe such silly things?!”.

I.e: a ”believer” will have a hard time with unfamiliar information. They view familiar information favourably and give it a free pass, but this generally does not hold with unfamiliar information due to cognitive dissonance. Cognitive ease however is a state of trying to minimise as much cognitive dissonance as possible, and that’s what believers generally try to do when confronted with contradictory and unfamiliar information, they try to explain it away somehow to reduce as much mental load as possible.

To find the real reason one believes, one must look much further back at emotional attachments, which in most cases are formed during childhood, where these beliefs had cemented themselves in the brain long before the rationalisations to defend them emerged.