This change in doctrine (aka "New Light") is probably the single most important fact that could open the eyes of Witnesses right next to the "overlapping generations".
Traditionally, New Light has been minor adjustments in doctrine. Even the Overlapping Generation still has the final point that "this generation will by no means pass away." They just kicked the can down the road...again.
Once I learned about this new change I became downright baffled why any Witness who has been in the organization for over 30 years didn't just pick up and leave. The Watchtower Bible & Tract Society was founded by Charles Taze Russell. The Governing Body literally just tore out about 25% of the Proclaimers book, burned it, and denied it ever existed.
Then to add insult to injury, they say the Faithful and Discreet Slave Class has been reduced to 7 men in New York. 7 people does not constitute a class of people. It was a giant middle finger given to all those who claim to be of the annointed.
My dad has claimed to be of the annointed since he joined the religion way back in the 1960s. I am shocked that he is still in.