Irrelevant because for >99% of depositors (NOTE - not total deposits) FDIC insurance will pay them out in the event of a bank run. For the vast majority of use

Irrelevant because for >99% of depositors (NOTE - not total deposits) FDIC insurance will pay them out in the event of a bank run. For the vast majority of users - the difference in 1:1 backing and FDIC insurance is irrelevant. This is the reason you'll almost certainly never see a global bank run. It's the reason why we probably will eventually see a Tether bank run.