For every "Robert" there are hundreds that leave and never return. Even more nonJWs are disgusted by the practice and would never have anything to do with WT because of this hateful practice. The Service Departments all around the world have files filled with those little cards that get sent from judicial committees.
From their website: "We do not automatically disfellowship someone who commits a serious sin. If, however, a baptized Witness makes a practice of breaking the Bible’s moral code and does not repent, he or she will be shunned or disfellowshipped. The Bible clearly states: “ Remove the wicked man from among yourselves. ”—1 Corinthians 5:13."
Evidently, their interpretation of "breaking the Bible's moral code" includes not adoring the WT clergy and vowing submission to a group of cracker-eating, wine-sipping crazies in Brooklyn.