The “proportional” argument is immature, childish and nonsensical. War does not work that way. If “proportional” is valid for Israel, then why isn’t it valid for every other war on the planet. We aren’t telling Ukraine or Russia to be “proportional.” If we had applied the “proportional” theory in WW II, we’d still be fighting it today.
You use overwhelming force to destroy your enemy, his armaments, and his will to fight...or he destroys you.
Patton: “Now I want you to remember that no bastard ever won a war by dying for his country. He won it by making the other poor dumb bastard die for his country.”
The "proportional response" argument is an evil deception.
The true intention is to make an intended victim stop resisting a predator with any effective means.
The correct response to a predator attack is an overwhelming counterstrike.