Bibi is correct.
Philistines, who were originally associated with the term “palestine,” although, there is no evidence they actually called the territory they occupied “palestine,” became extinct in the 6th century BCE, having been decimated by the Babylonians. Thus, “palestine” has been irrelevant for 2,500+ years. There is absolutely zero cultural or genetic links between Philistines, of European origin, likely Greek ethnicity, and Arabs, who began calling themselves “palestinians” comparatively recently. The majority of archaeologists and historians agree they originate from Arabia. The “palestinian charter” boasts of their Arab ethnicity.
Indeed, the term “palestinian” originally applied to Jews in the British Mandate, nicknamed “palestine,” dusted off from an old Roman term, “palaestina,” imposed on Jews, in retribution for the Second Jewish Revolt. My Jewish family members in the Mandate had “palestinian” stamped on documents. It was a Roman attempt to erase the ancient Jewish heritage of the land. Arabs in the Mandate rejected “palestine” and “palestinian” as Western inventions, which, of course, they are. Arabs had referred to Syria, including southern Syria, by an actual Arabic word, “Sham,” not “palestine.” There is no letter p in Arabic. For Arabs, there was no such country called “palestine.” Thus, had Jews not rebelled against the occupying Romans, the terms “palestine” and “palestinian” would not even be used today. Only much later after Jews in the Mandate became Israelis did Arabs begin calling themselves “palestinians,” as anti-Israel propaganda.