Crypto is one of the best methods available to Russia to circumvent sanctions and turn their capabilities to hard currencies. This is true whether we're talking about acquiring money by running frauds internationally, or finding ways to be paid for cybercrimes like ransomware.
Rather bigger amounts of defrauding are possible for Americans who figure out how to directly access the American financial system. That doesn't change the way that it is being used by Russia. And the Russian use case is far more relevant to this story - they are undoubtably involved in a shockingly large fraction of the crypto money launderers that were registered in Estonia.