I realize that the date is serious to an exiting JW, or someone who wants to exit.
For others who disagree, the temptation is "Whats the big deal? JW's aren't about 1914 anymore. It's not important" Thats true, it isn't important... But 1914 was THE big deal. It's what they hung their hat on.
And if they aren't about 1914 now, what are they all about? What makes them the truth if their dates and pillars of their claims of being the one true religion were wrong from the start?
So the date of 1914 and the associated year of Jerusalem's destruction IS a big deal. A very big deal.
But it isn't complicated. The GB knows their only hope in winning the debate is through attrition, that is, talk you to death and hope you leave frustrated.
It's really quite simple. All the history books, those pesky history books, had it right. They always have. 587/586 BCE is the date of Jerusalem's destruction, which makes all dates, EVERY date that JW's claim as prophetic 100% wrong.