A lot of banks are afraid of the crypto. If humanity starts to transfer money without involving a bank, they will lose a lot of money in fees, so it`s normal for banks to dislike crypto. What about real benefits - crypto it`s a very promising currency and this cost all risks.
I agree with tou mate,I doubt of bank accusing about cryptos that will bring more risk than benefits because in my perception the more risks involved in the investment the more you gain profits. Bank could say about that because they're afraid in the future that seems they think will replace by a crypto, thats why they keep criticizing on crytpocurrency.