Bank investors have more certainty because there capital is completely safe but they give 8-10% annual profits to the investors of per year. But it is comparatively less in terms of profits.
On the other hand you will get constant profits from crypto as if you are experienced in trading then daily profits is possible. Otherwise you can get profits by investing. However crypto investment puts your capital at greater risk (main point).
Despite the risks in cryptocurrency investing, I think it is currently less risky than keeping money in the bank. At present, in almost all countries of the world, many risky people who keep money in banks are now withdrawing money from banks and using it for other purposes. Especially those who are well experienced about cryptocurrencies are taking money from banks and investing in cryptocurrencies. Just don't have to have experience in trading if you hold good top cryptocurrency then you can get good success which is hundred times more profit than bank.
Truly it is people who are unknowledgeable in crypto would leave their funds in the banks because they didn't know the huge profit that can be earned from crypto investment, infact investing in Bitcoin or Ethereum is far less risky than any bank, the downside is only if there is a massive dump in the price of the invested crypto yet if the investor kept on hodling their coins there is certainly and tendency of the crypto to regain it price and pump bullish thus profit is guaranteed as well as the invested fund, the only risk involved is on how each individual and hodlers secure their wallet and above all I think saving ones hard earned money in a bank is like losing opportunity of earning decent income via crypto investment.