Limiting supply by design is not the same thing as limited supply in nature (like gold) because (a) design can always be modified and hence such limitation is artificial, and (b) even if one cryptocurrency has limited supply, that limitation does not work for all cryptocurrencies taken together.
Further the fact that gold is mined does not in itself make it money, it has to be stamped and issued by a sovereign to make it money. 14. If cryptocurrencies are neither a currency in the usual sense of the term, nor a financial asset nor a physical asset what are they? The proponents have improvised to call them as digital assets.