Invest your time is pretty different than investing your money. People are too lazy to do something more in their free time. They rather take the money and put into the quick rich scheme because they believe that one day they will find the hidden gem. 
investing money you can earn much more than investing time, but when investing in cryptocurrency, you also need to spend a lot of time analyzing projects in which you invest I totally agree with you, "it is necessary to spend a lot of time analyzing the projects you invest in." You have to assess many aspects to avoid fraudulent investment in cryptocurrency. several factors for analysis, I usually analyze from the project whitepaper. we can analyze a lot of things about the project in the whitepaper.