But on the other hand...
The rockets threaten the peace and security of Israeli citizens living near Gaza. They might cause Israel to stop expanding into Palestinian territory. They have zero chance of ending Israel's existence.
The rockets currently are capable of reaching main population centers of Israel, so they're not only threatening people "near Gaza". Except in the sense that the entire Israel is near Gaza. Even if it is silly hyperbole to try to paint the rockets as an "existential threat", no people should have to live in fear of their neighbours randomly sniping them off.
Also, the rockets have absolutely no chance of stopping Israeli expansion in West Bank, on the contrary they
accelerate it. There hasn't been a single rocket fired at the settlements in West Bank.