Low and mid-sized investors do not read much about the project, they solely depend on the rating which is given by the experts and their review, in other way, and investors are lazy to research about the ICO. Nevertheless, due diligence is required before doing the investment, most of the rating sites do this work with the help of KYC and deep research in the ICO. However, still scam ICO and fraudulent rating systems appear to deceive the customers.
Since its really hard to determine an ICO project now if scam or legit, that sometimes we tend to see the reviews on them. Its a risk to just rely on reviews but if you already do a throughout the research and sees team reliability. Then the project might be good to give a chance, once you join keep tracking and do follow-ups on their plans and whats.