This narrative is so transparently disingenuous. The USA is fighting Iran on its own behalf and its been using Israel to prosecute it, escalate it, and create the pretext for direct involvement.
Thinking back to that time the Reddit Brigade went to Ukraine to be mercenaries and Russia immediately destroyed their barracks. Wouldn't want to be that Joy Reich soldier sitting in some Israeli barracks right now knowing that my victims can accurately land hypersonic missiles anywhere in Israel. Wouldn't want to be the sole survivor who comes home and is rightfully seen as a feral animal by the majority of their country. Certainly wouldn't want to be the German on trial at the age of 90 after thinking I dodged consequences for committing genocide, my family rightfully labeled as Nazis and forced to defend or denounce me.