Saving money in a savings account is like putting money in a pocket with holes. Banks only give you interests that are lower than the inflation rate. Its how they make money. You are better off investing in ventures (Crypto currency) that give a return higher than the inflation rate.
Well, crypto currency is a method of investment for many people and for the original purposes a way of buying something a currency a "money" to be spent. Banks are... well a company ? They literally have nothing in common. Maybe you can invest your money to banks and they can give you savings accounts and with that you can make a return but in most of the world it is really low and you can invest your money to bitcoin as well, maybe that is their shared point ?
Honestly this feels like comparing bitcoin with apple pie or something, just because they both involve finance why would you think they have anything in common ? There is very little overlap between these two and doubt will ever have any overlap in the future neither.