or not
Well, the Bible doesn’t describe a “yo-yo” for the Jews. They don’t go back to the land, and then get dispersed again, gathered again, and dispersed again, and repeat for an unknown time. The Bible doesn’t have that kind of yo-yo effect.
It says that God gathers them back to the land and then brings the final resolution of it all where all the nations of the world come against Israel, once again in the land, and then Jesus, who is Israel’s Messiah, returns.
We’ve reached a point now, where just over half the Jews that exist in the world are in Israel. And almost the entire other half is in the USA. The remaining are scattered in small bunches in other nations. The Muslim world has pretty much cleared them out. Now it’s Europe’s turn to clear them out (the same thing is goimg on in the UK with the Jews. Next ... it will be the USA’s turn, for the Jews to leave!
Ditto your “or not.” Declining birthrates are the bane of us all.