I know about the divide and conquer strategy and I find it abhorrent. I am the opposite of a Bibi supporter. But I don't believe the ethnic cleansing narrative as you present it. The UN recognised Israel, but Arabs wouldn't have it and attacked. In victory, Israel conquered territory. The Nakba would not have happened if the Arab nations accepted the Israeli state.
Some settlers in the West Bank would be happy to kick all the Palestinians out, and some of the population supports then, which is awful. But that doesn't justify terrorism, let alone on the other side of the country against children and even other Arabs!