I agree, for every 10 scam projects there maybe one legit project. But that one legit project maybe enough to makeup for all the scam projects. Keep researching and find the gems.
If the project is legitimate, it means that it is not included in a scam project, because a scam project is a project that is not legal under any regulations and rules, so researching is necessary, but understanding what you are researching is far more important.