Yes, I know 1914 is the Big One, but I'll bet there are plenty of ordinary JWs who are very fuzzy on the subject and would believe any explanation fed them. Remember, the average JW gets weak in the knees at the very thought of trying to explain the 1914 chronology!
Wasn't it the Worldwide Church of God that basically told their followers, "We were wrong"? Yeah, they lost a ton of followers, but not all of them. People will hang onto whatever they want to hang onto.
I firmly believe the entire governing body could be caught on tape knocking off a bank before heading back to Bethel to have sex with each other, and there are plenty of JWs who would chalk it up to "imperfection,", "apostate lies," or the like.