Cryptos actually have a price mechanism where fiat does not. Fiat is made out of thin air. People invest this or mine to build something of value not based on debt so I disagree about your assessment of fiat currency. On the other hand, back cryptos with or pegging to gold will eventually happen once fiat dies for good in the next 4-5 years. History has shown they don't last more then 50 years and the IMF has public ally stated they want to move away from fiat.