to be able to create passive income every month from cryptocurrency you have to be able to work harder and certainly you have to be able to see the right time to enter to buy and sell coins at the right time.
I guess he's asking for certain project that can bring passive income while holding the coins inside your wallet, though what you are saying is correct everybody needs to work hard and study deeper in order to gain profits while inside this market, if you have good knowledge you will be able to select
what coins to invest with and what would be the best position and your target profits.