I searched and was unable to find any data supporting the statement that the petro dollar would be dead.
Only claims with a question mark placed after them.
Rather the opposite, there have never been so much governments dollar reserves as nowadays. Including China.
The grand total (all worlds governments) shows the same trend.
Oh yea, and all claims seem to origin from those that sell products whose price would likely rise with a dollar downtrend. If they really believed what they claim, they'd hold those products to sell them later at that higher price. But they don't, hehe hehe ...