A point to consider is that the bible states that if a prophet says things that god as not given them to say, they are to shun that individual or persons.
Deuteronomy 18:22 .....
If a prophet speaks in the name of the Lord, and the thing does not come about and does not come true, the Lord has not spoken that word. The prophet has spoken it presumptuously. Do not be afraid of him.
Another scripture to note or consider would be 1 John 4:1 ........
Dear friends, do not believe every spirit, but test the spirits to see whether they are from God, because many false prophets have gone out into the world.
So to observe if someone is saying things wrongly or what they have not been instructed to say in the preaching work, one has to play close attention to the instructions handed out by Jesus Christ himself.
One of the admonishments handed out to his followers is that they should not set a time upon god's own sacred time and that not even he knows of the time.
Yet the WTS and its top leading men have set numerous times on their own accord, taught and preached them, which were acts of disobedient apostasy. (unrighteousness)
Therefore if you were to repel these teachings from these men, in doing so were actually an act of adherent faithful righteousness in the eyes of god.
Scripturaly these men were and still are apostate false prophets sinners .
The bible teaches to shun evil apostates as you may also become associated in their sins.
There are now today approximately 8 million people who are sharing in the sins of the unrighteous leaders of WTS/ JWorg