It's 3 years past 100 years for the vast majority of JW's "in the last days." The strain of operating in panic mode for so long is getting to the elderly and near-retirement age ones who saved nothing and passed on lucrative careers because the end was going to arrive any minute now. Watchtower took their money, their opportunities, some never had children because of Watchtower, many found their JW mate no better (and maybe worse) than a worldly person.
I read that Jehovah's Witnesses is a ten-to-twenty year cult for many people. People would either wake up or be too tired of it to stay beyond that. That's wrong, but maybe it wasn't ENTIRELY wrong. Maybe it takes more than time passing with the same old bullshit. Maybe if the bullshit gets too radical, the statement comes back to play. But not in just 20 years for everyone. Serious JW growth took place in the 1970's. Those adults from then are older than 60 now.
Younger ones are not staying so much- especially those that learn things on the internet. Now, Watchtower takes members to the internet. Older ones are sick of shunning their children and ignoring their grandchildren. The Watchtower before Ray Franz didn't have them doing that. So that started in the 1980's.
I was never thrown out. I resigned as an elder in good standing. I faded out in good standing (except for being "inactive). I say that I am one of those 20-years cult members and I was fed up with the bullshit. But I saw how it got even worse after I left. I declared that the 1995 change in "generation" was the start of my road to freedom. I further declared that, had I not woken up before, the overlapping generation teaching would have had me stand up during that Watchtower study and laugh out loud at the teaching saying "OVERLAPPING GENERATION, NOW I REALLY HAVE HEARD IT ALL!" as I was heading out toward the door, never to return.
Who is to say if they are in meltdown? We will probably see after the fact.