Why did the Arabs and the Jews become sepArable?

Answer 1

It is unclear what "separable" means as you can only separate things that were once in concert or united and are now no longer so.

Many times, people incorrectly use Jew and Israeli synonymously, but they are far from the same thing. There are non-Israeli Jews (actually the majority of the Jewish community is non-Israeli); there are Israeli non-Jews (roughly 21% of the Israeli population); and there are Israeli Jews. The issue here is that the existence of Jewish Arabs was minimal throughout history. Jewish Arabs, i.e. people of an Arab ethnicity who believed in Judaism existed only for around 400 years in the Arabian Peninsula. However, the Rise of Islam in the Arabian Peninsula effectively led to the conversion of most Jewish Arab tribes to Islam. Those who did not convert renounced their Arab ethnicity (as ethnicities were more fluid at that time period) and considered themselves ethnically Jewish only. Such is the history of the Yemeni Jews. Elsewhere in the Islamic Empires, Jews in Arab countries were just that. They were not ethnically Arab at any point. It could be claimed that the Iraqi Jews were ethnically Babylonian, that the Palestinian Jews were ethnically Levantine, that the Moroccan Jews were ethnically Amazigh, etc. but none of them considered themselves Arabs. The Arabs agreed with this Jewish view and considered any Jews living in Arab countries to be exactly that and not Arabs. So, in this case, there is nothing to separate because they were never united.