A little bit OTT. This article. Much of what you say is true but your conclusion isn’t or at least not by implication.

Dollars (or local developed country currency) are still the best way to hold a current account. The purpose of inflation has and always will be to discourage people from sitting on piles of dollars and invest it or spend it. This is inflation working even if it’s higher than they let on and nastier than it should be.

Even the wildest proponents of fiat currency would be unlikely to recommend holding onto cash. You maestros any savings in a diverse range of assets that aren’t likely to fluctuate too wildly and/or that hedge each other and you will probably be fine whether you love or hate fiat currency.