The greatest problem the Society has isn't in the organization, but in the fact that it has no ministerial authority. When Jesus lived, the Jews repeatedly asked him about his authority. It wasn't a baseless question because no man takes the honor of acting in God's name except he who is called of God as was Aaron, the brother of Moses.
The Society did just that. It simply assumed the sealing keys that were given to Peter and announced to the world that Jesus had chosen them, in 1919, I think, without any word of God being received by God. There have been no angelic manifestations, no theophanies, no visions. The heavens have been closed to the GB, and yet they have taken the authority unto themselves and set themselves up as representing God. But how did they get it? Who ordained them?
No one in the Society has ever explained that.