For me it does matter, if members especially the newbies know where these type of scam investment are usually posted then they are less likely to join them. Them not being aware that this types of "investment" are not true are most likely blinded by the returns given in a short period that is why they are attracted to the scam. For me the warning given in that thread isn't enough for a lot of newbies to realize that most of the things being posted there are scams.
Because this warning:
If someone decided to participate in such a scam, then it is very difficult to stop him. In such cases, experience and understanding comes only when money is already lost. Let me give you a recent example: