When I first heard the term 'fiat money system' I thought it was talking about bitcoin. The value exists because some crypto guy says it exists. That is the very definition of fiat.
After when I was corrected that they were talking about real currency my first thought was oh, this is a grift. Only scammers try to reverse the meaning of words like this.
The term fiat currency predates crypto by a truly substantial amount of time, it describes an idea which is as old as currency. There is no reversal of meaning, fiat is from Latin ‘let it be done’ it’s value is by decree.
After when I was corrected that they were talking about real currency my first thought was oh, this is a grift. Only scammers try to reverse the meaning of words like this.