That said, I’m sure you’re proposing the absurdity of somehow returning all of Australia, which is not possible and no one supports that.
Similarly, returning Israel’s land is not reasonably possible and no one would support that excepting radicalised Palestinians.
That's precisely what Hamas is demanding in Israel. Hamas is the reigning government in Gaza and according to polling is not only popular but would win an open election in the West Bank.
In 1971. Do you have an example from this century? Most Gazans are 18 years old or younger.