They never admit openly that you can be disfellowshiped just for no longer believing everything. My own mother believes 100% that if you get disfellowshiped, you must have done something really bad. Yet the ARC and other Royal Commissions the world over have proved that child abuse is apparently not a sin deserving of disfellowshiping.
Why would Jehovah, if he in fact exists, have chosen this lot to be his people? The mind boggles.