In fact, this picture represent how the bitcoin system is integrated within the banking system. Bitcoin as an additional element to the banking system provides much more anonymity to fiat transactions, and fiat transactions also provides a stable price to the btc at the exact time of transaction. There is no other options to take unless one of them leave his place forever to the other .
they are both interrelated, we want the bitcoin system but the bank system will never disappear
so they will continue to be like that until both systems are destroyed by the destruction of this world
