Same story with my JW brother. After my bringing up judge Rutherford false prophecies, Beth Sarim and drunkenness.". Well, my brother's explanation was "it doesn't matter, Jehovah used brother Rutherford to grow the org"
Or the printed story about how Jehovah wanted Russell to have two mistakes (536 bce fall of Babylon and the fact that Russell overlooked the absence of year zero in the Gregorian calendar to do his calculations) in his 1914 prophecy so he could land in ...well....1914. Yep, divine guidance, even in the mistakes.
It is impossible for a JW to be wrong. Just amazing!