For me its actually the opposite: I feel like crypto markets are much easier to manipulate- so its done more often. I would also expext that a currency is used in daily life and not saved as form of high risk investment
So while I don't think that Banks operate for the benefit of mankind, I don't see where Cryptocurrencies would help, either. And to be fair the most real-world contact I had with Bitcoin are All of criminal nature - So there is definitely a certain negative bias