Israel will NOT go without a VERY big bang.
That's basically why it's still here at all.
In which case I would fully expect them to exercise The Samson Option.
Israel will not go. 1/3 survive the Great Tribulation (Zechariah 13, Matthew 24, etc.). This is called The Remnant.
They will return and stay there forever. Well, you got the 1,000-year Millennial Reign of Christ, another Gog-Magog war, and then eternity, where the New Jerusalem comes down from Heaven to the old Jerusalem.
Bottom line, this guy betting on Israel being gone, especially forever, is so wrong it’s beyond laughable.