It is old geopolitics.

Israel, Saudi Arabia, UAE, Kuwait, etc. benefit greatly from doing things the way the US likes. They make massive amounts of money, get a massive military to keep enemies at bay, they get to keep deciding how much crude oil costs, and they get massive amounts of weapons. In return they all spy for the US, allow the US to put massive military facilities in their countries, and protect the petrodollar.

It is that simple. The Palestinians have very little wealth, military, and political clout. So they get run over by the machine. Is it horrific? Yes. Is it easy to understand? Also, yes.