You are free to write as many words as you’d like on your idiosyncratic beliefs, but the fields of law, finance, & economics, as practiced & documented, disagree with you:
(It is interesting to think of the ways traditional cash might not meet a physicist’s definition, or assumptions under which Monero might somehow be more fungible or less fungible than physical cash, on a spectrum richer than a pure binary. But if you remain oblivious to what the word commonly means to others, you’re failing a bit at communication.)
https://www.investopedia.com/terms/f/fungibility.asp
(It is interesting to think of the ways traditional cash might not meet a physicist’s definition, or assumptions under which Monero might somehow be more fungible or less fungible than physical cash, on a spectrum richer than a pure binary. But if you remain oblivious to what the word commonly means to others, you’re failing a bit at communication.)