No, only Saudis, ironically, are Arabs.
Other so-called Arabs are no more Arab than any non English speaker throughout the world is English simply by virtue of the language they use.
Granted, as in here & the UK, people may have admixtures of, but still...
Palestinians have been living there continously while most of the Jewish diaspora lived on different continents since the Roman Empire chased them out of Palestina after the uprisings in the 1st & 2nd Centuries AD.
Declaring moral superiority is highly subjective, and when taking into consideration a racist bigoted gov't who has marginalized not only the NATIVE population, but Sephardic, Ethiopian, and other non-Askanzi Jews, laughably asinine and bogus.