The same is true of cash. Almost all of the complaints I have seen with regards to cryptocurrency limitations are in the ways in which it resembles cash. The transactions are untraceable and permit criminals to hide transactions - same as cash. If lost to fraud or theft, no one will replace it - same as cash. If you are in legal trouble, the government cannot freeze the assets - same as cash. Compare cryptocurrencies to cash, rather than a balance claim made by a bank. With a credit card it's even closer, as nothing whatsoever would prevent someone offering credit backed by cryptocurrency rather than backed by USD offering a credit card with the same capabilities. Your credit card isn't 'your money' and you're not transferring money when you make a purchase with it. You are requesting a loan from a company, and that company is handling paying for the transaction. You then later settle that debt. It's quite different from cash in many ways.