The large majority of Jehovah's Witnesses who get disfellowshipped are not immoral or wicked people like the Apostle Paul wrote about in 1 Cor. 5: 11-13.
Look at the Reasons For Disfellowshipping according to the Watchtower's handbook for Elders. Are those reasons for disfellowshipping and shunning Bible based?
Jesus did not say people should be shunned and treated as if they are literally dead. A careful examination of the words of Jesus in the Bible will reveal that Jesus treated everyone with love. Yes, he had strong words for the Pharisees, but their is no evidence that he hated his enemies. Read Watchtower quotes on Apostate Jehovah's Witnesses
In addition Jesus forbid his followers from judging. Luke 6: 37, Matthew 7: 1. See the Law of the Christ Therefore some say it is unlikely that Jesus would support judicial committees, disfellowshipping, and shunning.
Jesus said, 'Do not judge, and you will not be judged. Do not condemn, and you will not be condemned. Forgive, and you will be forgiven.' Luke 6:37 There is a difference between disagreeing with doctrines and judging people. Jesus taught us to treat everyone with love, even our enemies.