Interesting sentiment
I for one have always somewhat blindly espoused the petrodollar concept.
But I suppose that has less to do with finance and more to do with a lot of the wars and conflicts we start in the developing world. It is quite funny that so many people think USD will get dethroned when no other currency even comes close to being able to replace it across multiple sectors. Even Bitcoin may end up helping USD instead of hurting it like many assume. "Pristine collateral" as you've been saying, is a valuable tool.