Bitcoin is indeed risky. But bank investments are risky too. we all know that investing in a bitcoin is more risky than depositing money into a bank.Your money in banks are for safekeeping only. Investing in bitcoins, if done correctly, can make you a substantial recurring income.
I think It does not make sense to me, it sounds like a scam, they will invest using your money and you have no control for it. That's why I prefer bitcoin, because even if risky and highly volatile, you have full control over your investment.
Bitcoin is risky. But bank investment is also risky. In our country (because I'm not sure if this exists in other countries). When you have a large amount in your account, they will call you and ask if you want to invest, at least 20,000 Php (or 400 USD). They will propose some investment plans in which there is a choice of low, medium, or high risk investment. When you choose a high risk, there is a chance to lose or get 100% of your investment (Medium is 75% and low is 50% if I remember correctly).