Do you think internal disorder is unlikely? There’s broad disinterest in helping the Palestinians in any way, but Israeli society disagrees about nearly everything else.
I think disagreements in Israeli society are relatively weak insofar as they all adhere to a common vision of Israel as a Jewish apartheid state. As long as there's that to unite them - and make no mistake, at BEST 37/120 Knesset seats are held by non-Zionist parties, and more realistically, 14/120 - any crisis will bring together Israeli society in defense of that core existential concern.
Political disputes will continue, to very strong degrees. But there isn't going to be some mass defection from the core existential idea of Israel or Israeli sovereignty, including over its hypermilitarized state.