Cryptocurrencies and banks are incompatible things. Absolutely incompatible. You should understand that the philosophy of crypto is completely different from the modern financial system.
They are compatible because they have something in common... Both are a way to handle money, and sometimes we want to hold our cash on cryptos and some times we want it on dlls, if we want the money and not the cryptos banks are the easy way to withdraw.
I agree, cryptocurrencies and banks can go together. Some crypto users are too rigid and don't want to see that there are not so many differences between fiat money and cryptocurrencies. Yes, they are functioning different way, have some different principles but at the end of the day its about value they have and how it could be used in real world. That is why are banks interested in crypto and they are willing to adjust their business to be more compliant with cryptocurrencies.