There is a reason.
Jews/Israelis just couldn't/can't accept that anyone would ever believe the Arab lies. To this day, as anyone honest can see the truth- who wants peace, who doesn't, who bends over backwards, who kills kids on purpose- Jews/Israelis can just not grasp that "truth" is susceptible to constant unending well funded lies.
Leaders of the Judenrat couldn't believe the Nazis would kill them. they logically thought that alive they would be more valueble to the war effort. Evil is not logical.
Obviouslly the Israelis haven't learned from the past and they also think it may not apply to them because they are "new Jews"- the "i'm not Jewish I'm Israeli" and that by becoming such all anti-semitism would disappear-HAHA