They may not agree but the fact on the ground is that the Israeli government does not recognize any Palestinian state, so the people in Palestine are thus under the control of the Israeli state or they are stateless refugees with a right to return (to Israel). Either way, they are the responsibility of Israel the way Israel's government sees it.

What people want is one thing. What governments do is the official thing, that's what I refer to

I don’t particularly disagree with the bulk of this comment. But I’ll note that it’s substantially different than your original one, which is not about responsibility but about a hypothetical peace that would spontaneously occur if Israel would unilaterally drop its campaign. I don’t think that’s realistic, even though I agree that the side with a functional state bears additional responsibility.