A friend of mine lives in Argentina. He pays his living expenses in Bitcoin to other Argentinians. They are very happy to take it, even without legal tender laws because it doesn't rapidly regularly devalue like the Argentinian currency.
That would be true if the only way to create a failed currency was to print it to death. But we've observed cryptocurrencies with mining caps collapse to $0 in the same way as a fiat currency.
That it does, but I understand that Bitcoin's deflationary by default nature has also been criticized.
Bitcoin also adds new failure cases such as irreparably losing money through address typos and lost/failed hard drives, not to mention the numerous & exciting failures in DeFi.