Fred Franz knew all about Russell's failed predictions... and Rutherford's.
He even laughed about them in a public talk...
Then he did the same thing.
He blamed the rank and file for excessive speculation and was kept on as WTS president for years after his own speculations came to nothing.
He continued to insist on the imminence of Armegeddon based on his now abandoned 1914 generation teaching.
Now the GB has simply redefined "generation" without admitting responsibility for over 100 years of false prophecies on which JWs relied.
Who has been hurt by all this?
Not outsiders who didn't believe any of it...
... but sincere JWs who did...