Humans are bound in nature to give their review about something they’ve been into.Though you might hold things to yourself,but you won’t know when you spilled it out unintentionally.Anyways,if the project is a scam project,it wouldn’t be a good thing if you hoard such information from the public,information like that aren’t meant to be hoarded.It’s always important to gain knowledge about an investment or business an individual is about to start,that’s what is called DYOR(do your own research),failure to do that could lead to poor insight and lack of interest.
Yes human nature drives us to share our experiences and opinions about things we have been involved even when we try to keep things to ourselves, the truth often comes out suddenly sometimes unintentionally. If a project is a scam as you said withholding such information from the public does more harm than good, knowledge like that is not meant to be hoarded. This is why it is crucial to gain proper understanding before investing in or starting any business. and failing to do so often leads to poor judgment, weak conviction, and a lack of long term interest.