When were Jews expelled for every Arab nation? I don't think that's true. Like you said "there were always Arab Jews in the region" but they were a minority. The modern Israeli citizens are mostly immigrants though.

That surprises me. I thought sharia law demands that you let peaceful infidels stay as long as they don't practice their infidelity in public and pay the jizyah. I mean, it obviously sucks and is tailored in a manner that infidels are leaving, but there is no forced relocation as in zionism.