Problem with WT and its membership, it is a totalitarian organization. As such, it needs to feed itself on fear and guilt of the people to survive and to control. All hard coded totalitarian regimes works on the same principles, let's be Nazi Germany, Stalin USSR, communist states, or Jacobin's I. French Republic. Such system works on denunciation and suppression of individuality. This is done by erasing anyone uniqueness, by collective infusion of guilt. It is like Robespierre standing at the Convention in 1794 shrieking that anyone who is not a model citizen and patriot is a traitor deserving guillotine; but refusing name names, he infused fear in everyone with doubts that they are indeed traitors.
So you have book study, some public speaking, WT analysis, and the premises are the same. There are people who are "traitors" in their mind and hearts by doubting what FDS had said, and if they are doubtful than they will die in "imminent" Armageddon. People are doubting their action, thinking, and attitudes with each study and try to comply to the model role in order to survive. They do not want to end up like opposition of Robespierre that was chopping heads in hundreds a week.