That is the attitude that the GB would push to the rank and file. If you leave the org, you will descend into sin and destroy yourself. Few people want to leave the WTS out of a desire to lose themselves morally, IMO. Most just want to do things like question a specific teaching without feeling as if they are drifting into the deep end of the pool. Or celebrate a birthday, or get a tattoo, or wear a beard.
When you have been walking on eggshells for a long time, you don't even realize how much anxiety it can cause. The relief that many feel upon getting out must be absolutely immense.