Definitely true because bank is just an entity where you secure your money. But in the name of earning a profit from what you have deposited is not guaranteed. Investing is the only for your money to give you profit that can even make you a millionaire.
I agree , just keep an emergency fund on the bank so you can always pay your stuff and you don't have to worry. But once you have decent amounts of money investing pays of really well , just pick some secure funds stocks and maybe some more risky things like bitcoin. This way you will earn some passive income , invest what you gain again and you are starting to make money,