First of all Ettinger doesnt include Gaza.
The ratio of Jews and Arabs from the Mediterranean Sea to the Jordan river is 60-40 but the Jewish majority is diminishing every year, mainly because of non-Jewish immigrants, especially from the former USSR, taking advantage of the Law of Return which since the 70s allows for non-Jewish grandchildren of a Jewish man to get citizenship in Israel (people that have literally nothing Jewish about them), and if the illegals (especially the 80k African illegals with their high birth rate) will get citizenship, it will be a nightmare.
We can't rely on birth rates, and we obviously must not give citizenship to the Arabs, we have to expel the enemies whether by force (the illegal Africans and Russians) or by encouraging emigration (of the Arabs).
And of course, good Jews from North America and Europe must make Aliyah.