Before an investor invests in a project, he will of course read and communicate everything in detail, which is the right decision.
You should always try to understand the essence of the project and understand its technical nuances as much as possible. then the projects prospects become more understandable. Sometimes, having studied a project, you think twice to carry your money there.
Most often it happens so that having understood all the nuances of the project lost the desire to invest. But there are also really promising projects. You are right that you always need to study your investment object as deeply as possible.