There are advantages and disadvantages, and it may undermine the decentralization of Bitcoin. Will record our privacy in the bank. The original intention of Bitcoin is different. I hope that we will pay Bitcoin freely in the future, and there is no concern about privacy leakage.
Even though bitcoin is adopted by banks but I'm sure they will not be dominant so they can't control the stock and demand of bitcoin, banks certainly have limited funds and resources because bitcoin users are global so decentralization will continue to be effective without anyone being able to control it.