> if they'd done what Israel wanted and destroyed all the oil infrastructure.

That would have worked. But it is still a stupid idea if you don't cripple and destroy Iran's military capability first as Iran would have also retaliated and destroyed all its Arab neighbour's oil infrastructure too, plunging the world into an economic depression because of the energy crisis it would cause - The Iran War Is Destroying Something More Valuable Than Oil - https://houseofsaud.com/iran-war-refinery-crisis-saudi-aramc...

> Iran would have also retaliated and destroyed all its Arab neighbour's oil infrastructure too

Iran probably couldn't have, not without being intercepted and having its launchers neutralised every time it fired. But Tehran would have kept on credibly threatening to, which would have meant America essentially taking on air defence responsibility for the entire Gulf.