First, let us clarify who the "Palestinians" really are. The notion of a modern distinct "Palestinian people" with a language, culture and nationality of its own, is a new creation of Arab nationalist in the area, especially the PLO, in unison with the Arab League, and nurtured by the surrounding Arab nations and world media, after the ignominious Arab defeat in the 1967 war with Israel. The modern so-called "Palestinian people" are, in reality, a mixture of Arabs whose mother tongue is Arabic, whose religion is Islam, and whose culture is shared by most of the 22 surrounding Arab countries. There simply is not nor has there ever been a distinct Palestinian national entity. The term “Palestinian” has historically applied to anybody living in area, even Jews.
Second, as I have alluded to before, the name "Palestine" is the Romanized version of "Philistine," which was assigned, by the Romans to the region in the first century AD. It was a derogatory and humiliating term imposed by the Romans on the Jews, who constituted the vast majority of the people who lived there. Romans forced on the Jews and their land the name of an arch enemy of the Jews, the Philistines. Rome even went so far as to rename Jerusalem, Aelia Capitolina. Thus, the name Palestine came into prominence and remained attached to the region until the end of the British Mandate period in 1947. However, Jews have always considered the land their homeland and Jerusalem its capital. In addition, the land was never without as many Jews as the governing power would allow.
More than that, for centuries after Rome expelled the Jews and renamed the land, Jews constituted a majority in Palaestina Secunda, the northern part of the land, until the late 7th century when Islam arrived from the Arabian peninsula.
Arabs, just like slavs, romans...are a multitude of religion, natinality, ethnic, ethymology, culture...as opposed to the artifficial unity of Judaism where one has only one nationality religion, culture...
You are arguing something that you can not argue. Palestinians are a seperate nationality, multi religious and distinguished culture.