Do you know nothing of history? There never was any Palestine for a start. The region was controlled by the Roman empire, by the Muslims, then the Ottoman empire. The Ottomans lost control at the end of WW1. It was then administered by the British. The UN approved a plan for two states, Israel and Palestine. Israel declared independence in May 1948. It was completely legal. So no, Israel did not get a pass. They had the right to be where they were. The original territory they were supposed to enjoy was much reduced, courtesy of British betrayal and double dealing. FYI, I'm English so I'm not biased.
Blaming Israel for the situation is absurd. Get a pass? No other nation gets scrutinised as Israel does. Where is the outrage against Russia, Syria, Turkey and much of North Africa?