I have been posting the same thing for the last 2 years. If the snake has no food it dies. Oil is Iran's food!
Less of a problem, as targets, are Iranian refineries.
There are only a few and they are “soft targets”, much like those Russian refineries Ukraine has been hitting. Iran also doesnt have much infrastructure with which to import refined fuels.
Destroying an oil terminal like Kharg island will have a medium term effect on global oil prices. Not good.
Iran thus can pump and export as much raw petroleum as it likes, but it will still run out of gasoline and diesel.