from what i read, the Strait of Hormuz is mostly used for shipping to Asia now, with the US being a net exporter of oil, KSA and others getting more options to ship via the Red Sea instead, and overall blocking this would be a minor annoyance, not lasting long with 2 carrier strike groups on the way, and most to-be-blocked shipments going to China - shooting themselves in the foot. It seems the historical memories of the 70's mideast oil beef are just that. But what do i know.