Diamonds are the OG crypto currency and De Beers cryptobros. Diamonds are finite and someone decides to argue that that fact by itself makes them valuable while at the same time mining as much as they can.
> Diamonds used to be finite. Now, we can make as many as we want.
Same with crypto. There was only bitcoin, now there's as many as you want, and some people pretend that worthless thing A is different from worthless thing B.