My understanding is that the Palestinian Christians are not treated well by the Israelis. But it is clear that the Islamists treat them worse.
Its likely the “Palestinian Christians” treat Israel as rudely as they did Cruz, to which they deserve the back of Israel’s and our hand.
Secondly, there has never been a Palestinian state. Those now claiming so are outcast Jordanian, Syrian and Egyptian refugees, outcast by their own countries and for obvious good reason.
Thirdly, one would suspect there are very few and far between “Palestinian Christians”, if any certifiable ones at all.
Most Arab Christians in Israel and elsewhere are between a rock and a hard place. They relate physically and culturally to their Arab kin and relate with their prejudices and the nonstop propaganda. But the underling reason is that most of the Arab Christians are Catholic and their Christian traditions are built around Supercessionism or Replacement theology in which Israel isn’t seen as being a part of God’s plan any longer except in a spiritual sense as applied to Christians. In this climate an Arab Muslim can become a Christian and still retain his or her hatred of Israel and all things Jewish. I’m not saying this hatred is hard and fast but it is prevalent and theologically backed up historically and in current thinking. I know because I’ve spent time in Israel with both Jewish and Christian Arabs there.