If USA loses reserve currency status and hegemony over global financial system then US pensions based on US financial markets decline with that decline of empire.

Defined contributions pension scheme shift all the market risk from the pension plan provider to the retiree... All care and no responsibility is what US defined contributions pension plans are.

Chinas mBridge trade payments protocol looks like it could destroy the Petrodollar...with the Saudis joining the program recently and Iran and Russia already on board selling their oil and gas outside of USD/SWIFT.