France is a country, not just a nation. Their borders are internationally recognized, regardless of inhabitants. The same can be said for the large swaths of unpopulated Newfoundland in Canada and Siberia in Russia. The land isn’t forgone due to being uninhabited. The same is not true for Palestinian territory.
Palestine is an internationally recognized nation-state. A nation because they are a group of people that share a common culture, and a state because they govern themselves. It is not a country according to the UN. The 1949 armistice line, or “Green Line,” made up the boundaries of Israel, the West Bank (the area west of the Jordan River) and the Gaza Strip. It only determines where Palestine isn’t, not where it is. Palestine’s border is only determined by an Israeli agreement, and not internationally recognized by the UN. Therefore, if Palestinians leave an area, it is no longer considered Palestinian territory.
That’s exactly why Netanyahu is trying to coerce evacuation of regions. Once uninhabited, he can legally begin occupation of land that is no longer considered Palestinian territory.