The Israelis are building long term insecurities for their nation state. Imagine a world in the which the USA isn't the global hegemonic power. Imagine American for one reason or another decide they can no longer support Israel?
Building peaceful relations with diverse neighbors is the foundation for long term security. Genocidal mania in an attempt to broaden the borders, is the breeding ground for future terror.
Israel is laying the groundwork, the building blocks, for long term insecurity. Not security.
If one thinks extremism equates to well adjusted humans, economically thriving and flourishing societies I've got another populist candidate to sell you.
Any short term "forced" cohesion they build internally is now actually sowing the seeds of deeper long term fractures.