Dude, c'mon, first of all, they gave them land and they continued to launch missiles into Israel. Then they invade Israel and you expect them to do nothing?
All people like this KNOW is what they have been told by people who essentially don't know a damn thing. None of them are willing to do any independent research and consider history except in the most isolated way so that if they squint really REALLY hard and ignore everything else it SEEMS to tell them what they want to BELIEVE.
But in a way it no longer matters. The Palestinian government through their terrorist HAMAS militant branch committed both an act of war and war atrocities and are now going to pay the cost for that as the Israeli government and their military decree. Rationalizations . . . be . . . damned.