Marked for later reading.
Part of the problem, though, is this:
"Watch out for the leaven of the Pharisees." and "A little leaven ferments the whole lump."
Any organization, not just WTBTS, ANY organization that claims to be God's channel, God's mouthpiece, spirit-directed, God's CHOSEN people, must, by definition, be 100% truthful in its doctrines. Why? Very simple: "God...cannot lie." (Titus 1:2)
So, these two possibilities exist:
1. Men were NOT listening to God
2. God lied
If #1 is accurate, then the entire organization cannot be doing God's will because anyone worshipping God "must worship him in spirit and truth." (John 4:24)
If #2, then we're all doomed.
Ok, there's a third possibility:
3. God did NOT choose the WT organization, and is NOT leading / directing them.
I tend to believe #3.
So, it doesn't matter if they START getting things right. The fact that they HAVEN'T up to this point, but insist they have, only proves the untruthfulness of this organization. This equally applies to ANY religion claiming to be the true religion.
Does this mean we who are believers should dismiss out of hand the entire religion? Christ didn't say to do that with the Pharisees. He only said to watch out for their leaven. Each person has the responsibility and obligation to see if what is being taught is truth or not. And that is something Christ commends. To the congregation in Ephesus, he said this: "‘I know your deeds, and your labor and endurance, and that you cannot tolerate bad men, and that you put to the test those who say they are apostles, but they are not, and you found them to be liars." (Rev 2:2) The word "apostle" means "sent forth one". Any who claim to be sent forth from God or Christ to proclaim whatever they proclaim MUST be tested.
If one finds that a religion teaches SOME truth, should we stay with it? I don't think I can answer that question. I can only echo Christ's words: "But whoever stumbles one of these little ones who have faith in me, it would be better for him to have hung around his neck a millstone that is turned by a donkey and to be sunk in the open sea."
EDIT: Let me add that if a religion is teaching that the end is near, Christ
was pretty clear on that point: “Look out that you are not misled, for
many will come on the basis of my name, saying, ‘I am he,’ and, ‘The due
time is near.’ Do not go after them."