IF Israel were frum by our standards, it would lose about half of its population, including most of the personnel in the most important military units, and most of the “StartUP Nation” type industries. You would lose the massive secular tourism industry, and would lose most support from Jews outside of Israel (most of whom are very secular, very rich and well connected politically).
If you are Chareidi-enough to accept a much lower standard of living, and willing to make the necessary concessions to live under Muslim rule-getting rid of the hilonim is a great idea. IF you prefer that Israel be a westernized modern country with a strong military, you probably don’t want to go gung-ho in desecularizing Eretz Yisrael.