I suggest that the norm in governing any organisation requires the leadership to fulfil the job awarded them; that is the job of directing the people and the money and to make the business grow.
Historically there has always been a separation of the private beliefs and the public sentiments of leaders. People with responsibility are either trained in leadership or as in the case of the GB they are chosen for their fidelity to the org but whichever way a person arrives at the top of the tree, it is required of them to play a leadership role. The political forces for leadership demand a steely and often un Christ-like ruthlessness.
But also there are perks of the job... how about good old Pope Leo 10?
“At a lavish Good Friday banquet in the Vatican in 1514, and in the company of "seven intimates" Leo made an amazing announcement that the Church has since tried hard to invalidate. Raising a chalice of wine into the air, Pope Leo toasted: "How well we know what a profitable superstition this fable of Christ has been for us and our predecessors."”
As a JW I would never have thought this attitude was possible in Watchtower land but now having seen the dishonesty and lies of the organisation, I believe that it is possible to be in the GB and not be a true believer. Humans are very capable of duplicity and any doubting GB member has every incentive to continue the charade expected of him.
After all, this is now the pattern found in the congregations; many attending are just going through the motions but are no longer “true believers”.
The JW religion is fast becoming a hollow organisation.