How the fuck could be wasting resources? we are mining cryptocurrencies, that is money, and what about when the governments have to print bills? They need paper to make those bills, and getting paper means that they need to cut off trees in order to get it.
In mining, you use a lot of electricity which affects the environment. But you're right, it's money, but it's still carbon. It becomes wasteful when worthless cryptocurrencies are mined. If you check online, there's a really long list of ctcs and a lot of them are rubbish.