
Many ethnicities are distinguished by their religions. Jews are one example, where the Jewish ethnic identity is heavily tied to the religion, and most members of the religion are of that ethnicity. But there’s many other examples. The primary difference between Croatians, Bosnians, and Serbs is religion (Croats are Catholic, Bosnians are Muslim, Serbs are orthodox). Similar for the Protestants and the Catholics in Northern Ireland. Or the Coptic Christians in Egypt.
I wanna preface this is not a defense of Zionism (quite contrarily actually). But it is much more complicated than that. The three major Jewish ethnic groups today (Ashkenazi, Sephardic, and Mizrahi) all trace their ancestry and DNA to the Levant. That part is true. But at the same time, those groups had been in diaspora for millennia. The Ashkenazi inhabited mainland Europe, Sephardic the Iberian peninsula until the inquisition. Much of their dna and culture had been mixed with the locals
jewish people are actually not a religion, or ethnic group, or race. they predate all of those concepts. in the ancient world, people lived in tribes that blended national, religious, and ethnic identity into a single tribal identity that was also political and joinable. most of the world sort of stopped identifying that way with the rise of empires and nation-states. jews never did. in hebrew, jews are an “am”— a people bound together
… interestingly (or terrifyingly), the Y chromosomal DNA is much more strongly linked to each other than the X chromosomal or any others, suggesting that throughout history the male line disproportionately valued. As if they could “claim” local women, but if any of their daughters married local men those lines quickly lost their ethnically Jewish heritage
So, from a sense of reuniting the various ethnic groups in a single place, the levant does make sense. What doesn’t make sense is why the world felt a need for that to be the case specifically for Jews. Like pick pretty much any modern day nationality/ethnicity. 99% of them have ethnic roots in entirely different regions thousands of years ago. The Turks of Turkey would be in Central Asia. Hungarians and Finns would possibly be as far west as Siberia. Celts (Irish) would own Spain.
also, no, the paternal line was not particularly valued. culturally, judaism is matrilineal, largely because the rape of jewish women by non-jewish men was so common. men from the levant are likely to have started the ashkenazi diaspora by converting and marrying south italian women, but after that the community was very insular