The thing is the issues with Israel are a unique problem. Palestines and Israel have got both their own founding myths, which greatly contradict eath other and are one of the main reasons for the on-going conflict.
I don't think it's so much to do with founding myths as it is to do with the fact that the Palestinians had been living there for centuries as subjects of a province of the Ottoman Empire, alongside smaller communities of Jews and Christians, and later under the British Mandate. From the beginning of the C20th they found themselves sharing the country with an increasingly large number of Jews who were legally relocating from Europe, whether for religious reasons or to escape antisemitic violence, and legally buying land from absentee Ottoman landlords. Post WW2 they found themselves, without being consulted about it, citizens of an explicitly Jewish state, with the Jewish population greatly increased by immigrants from Europe, displaced by the Holocaust and post-war boundaries, and by Jews expelled from various North African and Middle Eastern states by their respective governments.
Many of them were driven off their land by the Israeli Army during the fighting of 1947--49, and found themselves forcibly relocated to neighbouring countries which, unlike the European countries (particularly Germany) which also had to resettle whole populations who had been expelled from their homes after the German defeat, didn't try to resettle and integrate them, but gave them the hereditary status of "Palestinian refugee."
This has continued ever since, with Jews emigrating, perfectly legally, to Israel, whether for religious or cultural reasons or because they wanted to escape persecution in the former Soviet Union.
The result is that you've got two communities, each with perfectly valid, and conflicting, claims to the land in which they both live, same as in India during partition, Northern Ireland or the former Yugoslavia.
The problem isn't "founding myths." It's history ("a nightmare from which I am trying to awake," as a noted fictional Irishman once put it).