You haven't mentioned any logical source of this information.
Read the whole thread especially on page 2 from philipma1957.
You will find it enlightening since his wife is a customer of BoA.
If this decision is really taken that BTC and ETH will considered as cash from now will be a great epoc making event for the crypto. There is a question of my mind, how they will claim taxes on the users. How many % of taxes they will implement on income from Bitcoin and Ethereum.
Regarding this, perhaps there is another document to explain it.