It is easier to understand if you apply the rule of Cognitive Dissonance.
That trying to hold two contradictory beliefs at the same time is mentally painful.
As in OY VEY it makes my head hurt.
Either the WTBTS is totally right, because no half way measures can be applied, or It's not. This is a very painful process to go through.
Their can be no contradiction between that person's beliefs and actions. Only those who do not totally believe can successfully game the organization they serve.
"In A Theory of Cognitive Dissonance (1957), Leon Festinger proposed that human beings strive for internal psychological consistency in order to mentally function in 'their' so called real world. A person who experiences internal inconsistency tends to become psychologically uncomfortable, and is motivated to reduce the cognitive dissonance.
This is done by making changes to justify their stressful behavior, either by adding new parts to the cognition causing the psychological dissonance, or by 'Actively' avoiding social situations and/or contradictory information likely to increase the magnitude of the cognitive dissonance."
This is a factor in every high control belief situation be it the JW or Mormon world, Scientology, the Military, a sports team......a police force, political party, a corporation.
In all of these singular worlds there is a strong need to think a certain way. A need to hold firm. In our human past being a part of a tribe, protecting it, being willing to fight for it............meant surviving.
When a person begins to see things in a different light they become suspect, if they speak out about what they don't like or think is wrong......... the suspicion is confirmed and a separation process is put into effect.
As in shunning.