This is a completely absurd way of framing the issue.

The surviving men of Germany and Japan did not 'make better choices'. They had no choice but to submit to the will of the occupying allied forces. They had no option. The choice was not theirs to make. Allied soldiers with guns in their territory would punish them if they did not comply with the will of the allies in re-building their countries in the way the Allies wanted.

The allies were not righteous saints. Stalin was on the side of the allies and slaughtered Jews too, just like Hitler. After the war, Germany was carved up by the allies and East Germany went to the USSR. Did the Germans in East Germany have any say in the matter of making a 'better choice' to live under Soviet Rule?

The soviets did something very similar to what Israel has done to Gaza: Built a wall around the territory and denied freedom of movement into and out of it.

Occupied people don't have the ability to 'make choices' about their plight because they are oppressed. That's what oppression is: depriving someone of their freedom (or land) so they are unable to make their own decisions or survive without complying with the demands of their oppressor - like a slave.

Like in Hebron: The Palestinians live under apartheid. Israel controls everything they do, and where they can and can't walk:

https://www.youtube.com/watch?v=aEdGcej-6D0

If you were held captive or prisoner, or subject to a foreign occupying force, you would not be in a position to 'make choices' either, except to perhaps resist the occupation at grave risk of reprisals by your occupiers...

Which is exactly the situation the Palestinians and Gazans find themselves in, and what they're lashing out against.