I think the jdubs of today are much less likely to actually THINK about anything the wts spews out. They are not the researchers, bible scholars, and critical thinkers of years past. They are the We All Belong To The Coolest Club On Earth! jdubs. The fence-sitters are peeling off as evidenced by the growth on this site, but the mainstream rank-and-file don't question a dang thing put out by the gb.
If the gb said it the trib was going to happen in 2050, not one of them would question it. They would immediately begin thinking about how cool it was that they were living in the Greatest Time on Earth! It would be a cause for celebration and proof that their illustrious leaders are actually appointed by jehoober himself! And it would keep them revved up for another three decades. Then when nothing happened, the gb would again just say, "oh, we never actually used that date".
And several more real generations will be lost. Including one of my kids.