God himself forbids us to criticize a brother/sister in the Lord. Most criticism is not honest and loving, sadly. I don’t have any problem with someone telling me to my face that what I’m doing isn’t pleasing to the Lord, but it’s not good for Christians to constantly criticize another brother who is in the ministry. If they don’t like what he does, go to him or write to him personally. Warren isn’t my cup of tea but we did do a small group in the church at our home and it was fine.