The GB have come out and said that they are not inspired and are not infallible and can get things wrong...
And there is no mass walkout as of yet...8 million people are trapped in the concept that it is God's Organisation and is "the truth".
No matter what is said by the GB or printed it does not matter to a JW because they believe in the concept.
They can say all the batshit crazy they want....they can change everything and anything and it simply will not matter to those that believe in the concept that the GB are chosen by a god called "Jehovah".