Despite what You mentioned regarding the fact that currencies that have large markets may be vulnerable to scams and many other risks, through conducting research and following the developments and updates of these projects' currencies constantly and the movements of its team, you will be in the safe side, and scam projects can be condemned and detected through many signs, the most important of which is what the OP mentioned, and through the currency contract address as well, and from its project whitepaper, and the project goals that were achieved, and through the exchange platforms that listed the currency, and many other factors that can during one of them, you will discover a loophole and not fall victim to any scam projects.