Yeah, the "single issue" of genocide. And how do you think the safety of people develops, when genocide is normalized?
Do you think the Nazis started with death camps? These things are processes. And normalizing genocide abroad is a big step towards normalizing genocide at home. There is no safety for anyone, if genocide is normalized.
That is not an argument against not supplying bombs, artillery and tank shells, fighter jets.... And the vast majority of Israeli attacks are not sniper attacks. Also without the US sending missile systems to protect Israel against the neighbors intervening, that gives the cover under which the snipers can act with impunity.