If this is the case then they are manipulating the market by creating a success story and then publishing it on the social media platform to attract unsuspecting investors. Then when they hit their target profit they will cash out leaving the market. I think this kind of action is a fraud since they are deceiving people by making them believe that the guy is a solid trader when the truth is he is an insider who know all the pump and dump plan of the team.
This is why it is better to be suspecting instead, so that we won't easily be a victim of this type of schemes. Some people will hate us for this but I will only ignore them.
These people are for sure won't help us anyway when the problem occurs. There are also good traders who likes to share their achievements on public and upon further investigation we can prove that they are not a criminal but just want to inspire others to be like them. Doing so, can still allow us to follow some of their movements like buying the same coin. This makes them earn more but that is only just a bonus for them or we can say that they also deserve it for the actions that they have made.