First of all, co-authored in Tel Aviv isn’t evidence of proof. It’s actually typical for people who say “see, even the Jews agree.” That’s a form of bias against Jews. I’m aware of this very sweeping hypothesis. It’s not proof. And in fact, it’s been widely rejected by other scientists. A team of investigators led by Pavel Flegontov and Alexei Kassian pointed out that the study you cited horribly misapplied the GPS technique because it is intended for inferring a geographic region where a modern population is likely to have arisen. It is not suitable for admixed populations nor for tracing ancestry that occurred 1,000 years ago. In fact, the study accidentally confirms Jewish roots. If the Ashkenazi Jews are presumed to have dual Middle Eastern and Southern European origins, then the GPS method would infer their origins to be at some midpoint, such as the Black Sea coast of Turkey, which ironically the study was trying to say Jews came from. Descendants of people who left the Middle East 2,000 years ago won’t have the same DNA markers today as people who never left the Middle East.