The problem is that like any number of religions the WTBTS painted it's self into a corner.
How do you walk back a church approved teaching? If you do...... you weaken your believers.
What changed every thing was the internet. Starting in the late 1980's and then into the 1990's we finally had information about the WTBTS. All of a sudden we could second guess the historic claims..... if not all religions............ most of them. Many of these religions became boutique religions. The Mormons, the WTBTS, the Christian Scientists....people who were trapped in these newer religions began to question what and why.
I think we forget that the Jehovah's Witnesses or the WTBTS was formed in the 19th century as a publishing house. This was a time when a high school education was a big deal. This was also a century that flourished with many many new religions.
Looking back it is obvious that traditional religions were no longer providing clarity and a message that you could trust.You name it and there they were....... a bunch of new religions each with a message, a plan and a way forward.
People joined because religion was a mainstay of daily life.
We didn't know any better.
Lets remember that being a JW was also being in a social construct. Over the years your family, friends etc. were in those closed off and private religions. We had a vague idea of how it started but hardly a library had a history of the JW's. We went along and got along and only learned later that a lot of the trust we put into the Society and head honcho's....... was misplaced.
Their are tons of religions that turned out to be a fool's folly.
JW was just one of them and judged on many different levels...... a total failure. Their numbers are not the sign of their real value.........it's the intent that matters.