Love it when this gets dragged out. Nevermind the hundreds(?) of other countries that have nearly a century of mostly-stable economic activity under non-gold-backed fiat currency.
This is like saying that all pilots are actually trying to crash airplanes because some airplanes have crashed in the past.
My speculation is that, on a long enough timeframe, every country eventually becomes a loser when they are using government-controlled currencies. Corruption is inevitable..
Literally the rest of the earth manages to get along just fine. If you're suggesting a bank controlled by a single idiot centralised dictator has the potential to fail, I can point to many thousands of rug pulls on the supposedly "immune" blockchain.
This is like saying that all pilots are actually trying to crash airplanes because some airplanes have crashed in the past.