The perils of fractional reserve banking can arise in any centralized custodial arrangement. As long as no one performs a physical audit—or there is no physical object to be audited in the first place—then accounting fraud can and will happen. This is, in my opinion, the raison d’etre of blockchain. Public, immutable ledgers are immune to this kind of fraud (although they have other issues, of course).
Fractional reserve banking in the real economy is utterly irrelevant thanks to the FDIC backstopping a run. In the last [edit: 88] years nobody had lost a single penny to a bank run or default including 2008s WaMu default thanks to the FDIC. Crypto fractional reserve like tether has no backstop and that’s a completely different beast. It’s what exacerbated the Great Depression. As with all blockchain unless the state…
Debasement of the currency, however, has been…high.
So you didn't "lose" that dollar from a hundred years ago, it's just worth about a penny now. Where'd the other $0.99 go?