No, I am not wrong.  Debt based fiat requires infinite growth to not collapse.  Without growth, interest rates would need to be set to zero, which is what we already have...and what Japan has had for a long time.  Interest rates are actually negative vs inflation.  Regardless, it's impossible for borrowing to not have a carrying cost.  Trying to nigger rig no carrying costs is just a temporary can kicking ploy that creates epic levels of malinvestment, which then implodes the system in a much bigger crash than having just left interest rates at their normal levels.

You then run into another problem.  The monetary unit literally is debt.  Interest generating loans and the currency itself (which also generates interest) are erroneously classified as assets and used as collateral when debt is always a liability and never collateral.  The prolonged 0% interest rate is guaranteed to create a malinvestment bubble which will bust and create massive deflation and collapse the system when it does from all crosslinked loans going bad because the banks cannot handle any form of deflation.

But back to the carrying cost aspect.  Fiat dollars are considered assets because if you have enough of them, they can (at some times) generate a lot of interest for you.  If interest rates are zero because growth is impossible due to peak working age demographic in every nation that matters, and peak energy use - because energy is what powers the economy and the world doesn't have infinite energy to give - then fiat is no longer an asset and then turns into a liability.  Once fiat is a liability, the world is guaranteed to go back to physical metals regardless in almost every aspect.