We knew that long, long ago, perhaps starting with WWII and the German army drive to the Black Sea and Middle East oil fields, and Japan's utter dependance on oil for its navy, and surely with the 1973 oil crisis. We've known for a century.
What the Iranian war shows, instead, is what a failed educational programme it is to make primary and secondary school budgets dependent on real state taxes from the catchment area, and everything that derives from that, starting from a population that can't largely locate the Pacific ocean on a map, and continuing with a complete lack of critical thinking skills that render them vulnerable to populists and pundits, voting time after time against their very own interests.
"About 11 percent of young citizens of the U.S. couldn't even locate the U.S. on a map. The Pacific Ocean's location was a mystery to 29 percent; Japan, to 58 percent; France, to 65 percent; and the United Kingdom, to 69 percent."
https://www.nationalgeographic.com/science/article/geography-survey-illiteracy