No it didn’t. Most of the Jews came after the Palestine nakba/massacre which made Jews feel unsafe in the middle east (jeez I wonder why, but also not their fault.) the Jews who came before the independence were all European terrorist who built armed settlements and militas Far away from Palestinans and Palestinan Jews as they didn’t support them.
Let’s read it charitably. Maybe they mean more middle eastern Jews moved to Palestine in the last 6000 years than did europeans in the last 50.
Thing is, most likely Palestinians are descendants of Jews who lived in Palestine, who were once the caanites of Canaan and so on and so forth. The Jews who over time converted to islam, (but not all, Christians and Jews still very much exist tho not sure about numbers) before 1918 the Jewish population was a 56,000 thousand and many of those were immigrants by 1939 they were almost half a million
As you say, many families converted to Islam out of choice or simply left. Drag thinks maybe the original point was that Palestine has always been a place where Jews could live in peace. But Israel has never been.
And Jews that converted to Christianity under the Romans/Byzantines and then converted to Islam. Israel focuses on calling them Arabs to imply they migrated from the Arabian peninsula but that’s not what happened. They were arabized by Arabian rulers that migrated. It’s not like the berbers ceased to exist, but somehow Israel wants us to think the levant was mystically empty.