It is important to know that for any project hoping to convince investors into putting their money into the project, they are going to be focused on making the project as appealing as possible which means that the project's whitepaper will surely be good so I believe you should look beyond the projects whitepaper to decide if a project is legit or not.
Always make through research of a project's team, road map and token metrics to decide which projects to invest in
An excellent white paper has a clear roadmap. A detailed description of the project and how the project will develop. If the white paper shows all that the investor needs, it will help investors evaluate the project through a blank white paper. But in fact, very few projects can accomplish the goals set out in the white paper