The US govt has a responsibility to keep the PetroDollar in tact since Nixon killed the gold standard, otherwise the global dependency on USD is no longer maintained and other currencies have a chance to replace it.
This is currently happening, ofc, with ships crossing Hormuz by paying Yuan instead of Dollars.
Now that UAE has shown other countries how to leave OPEC, USD (read: everyday Americans) might be royallyfucked but at least USA might be able to move away from microplastics and pollution.