The title speaks of (fiat) 'cash' while the article refers to 'fiat money' (fiat currency). Cash is a whole lot more equal to cryptocurrency although it can be printed at will just like electronic fiat currency. However, the alikeness rests in the fact that the holder of cold hard cash has control over the physical currency, similar to a person holding the private keys to his cryptocurrency.

I suspect that cash will play a vital role in the next crash, as confidence in banks is still low.