Probably, he has an insider info that makes him profitable on meme. There’s a lot of pseudo whale like this that is just a team member on meme coin itself gaining profit from market manipulation.
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.
Scammer? Did he scam somebody? Let's not forget that the definition of scam based on a quick google search is "deceptive scheme where someone tries to trick you into giving them money, valuables, or personal information". Did he trick you to give money to him? No. He asked through a donation yes, but for me, it isn't a scam because we have a choice not to give him because we will not benefit from it. I don't see any scamming attempt here so it's irrelevant to say at least. e him if there's an update on X where he opened a trade. 
Ride the wave like what they're saying.
Ride the wave like what they're saying. If he is an insider then there is a deceptive scheme in there but well it is only an assumption so it has no basis or whatsoever.