That's your "no evacuations"? Yeah, no. When fighting, the military often has to be in harm's way. And defenses are never perfect, sometimes the enemy succeeds. That alone says little to nothing about the operation itself. The enemy got a hit in. That happens in war.
If the final total US military lives lost stands at 6, that will be a bargain. I don't know how much material we're spending (neither do you), but it's worth a fair amount to disable Iran's offensive capabilities, and it's worth a lot to guarantee they never get nukes.
As has been pointed out, he didn't start it. He's trying to finish it. I was pessimistic about our capabilities to do so, but so far it's been going pretty well.
ETA: and as a bonus, this is also a serious blow to both Russia and China.