The Jehovah’s Witnesses case criticizes shunning, Christian groups such as the Amish practice it, and 1 Corinthians 5 commands separation from unrepentant members. What distinguishes disconnection from church discipline?

This claim is framed practically, as a warning that hostility can get you labeled, rather than as a criticism, and that is a fair way to hold it. If a criticism is intended, the distinction is that biblical discipline concerns conduct within the community and aims at restoration, while disconnection is applied to outsiders, including family members, who are judged antagonistic to Scientology, and that the Suppressive Person category is defined by opposition to the organization rather than by any moral wrong. Introvigne compares the practices across religions, and his comparison is the right place to test that distinction.