Let's say you magically dissolved Israel. What then? Do you put a different group in power with the Jews still there? Do you deport them? Do you let it be a democracy, or do you need to enforce the leadership somehow? Do you carve up the territory for other surrounding nations like the Kurds? It isn't an easy problem by any stretch of the imagination.
Plus, Israel won't be dissolved, it's very well established now. So calling for it will lead to terrorism hurting civilians and more war rather than that dissolution actually happening.