Also, judiciary committees are given a long detailed list of what a person can be disfellowshipped for, and what they can be reproved for, effectively creating their own law book. A book which rank and file Witnesses aren't allowed to read even upon request.
So they have essentially done the same thing Jesus faulted the Pharisees for doing. They have taken it upon themselves to take simple principles and rigorously define what behavior does and does not conform to those principles, and then they've gone even further outside their rights and started disciplining their fellow Christians for not living up to their defined standards for what it means to live by those principles.