Yes. This isn't Ukraine fighting off a bigger invading army. Presumably, Israel has enough weapons and ammunition to fight a war against Lebanon, Egypt, and their other hostile neighbours. Their plan for ~~ethnic cleansing~~ militant suppression in Gaza surely won't do much to deplete those reserves.

This is Israel invading a tiny slice of land that has no army. Sure, there are some militants there, clearly they have some weapons, but is there ever going to be an actual justification for things like artillery or tank shells?

I mean, we all know Israel is going to use them, but they're going to be using them against civilian infrastructure. And, if Israel is using so many shells that they run out, should the US really be supplying artillery that is 100% going to be used against civilian targets, because there's literally nothing else to attack in Gaza? If Israel uses so much ammo that it depletes their reserves and threatens their ability to fight a war with Egypt and Lebanon, well shouldn't Israel show some restraint and not do that?