Fiat currencies can be created with no energy expenditure whatsoever. That is what it means when people say they are "backed by nothing". On the other hand, take a look at how much energy is required to mine a single bitcoin block. And then note that that amount is increasing all the time, and for an amount of tokens that is halved every 4 years and eventually falls to zero (bitcoin is mathematically more scarce than gold). Bitcoin's backing is stronger than any precious metal. It is the purest, hardest representation of work that has ever been devised by humans.

And precious metals have been debased, diluted, printed over, confiscated, counterfeited, etc. every single time they have been used as currency in history. Anons are naive beyond belief if they think that returning to a gold standard on the other side of this is going to fix things. After a few generations, the banks will come up with a new way to print over the gold, and the cycle will start again. Bitcoin is harder money than gold or silver, and it eliminates the need for banks entirely.