Well if you have made profit and you see more potential then why not?
But personally I would just use my airdropped tokens if I were you. Remember to not be driven by happiness too much. You might think that it’s going to be a really successful project but it might just be a one-time thing so be careful.
Indeed and that is what the concept of these meme coins all about, to lure people that there is an easy money at them, just like on what we experience in gambling. If in case his decision is now full and we can't do anything now to stop him, maybe we can still give an advice that he might consider and that is, he will need to pause and wait for a while for the dipping of the price of this meme coin before he invests. That can increase his chances at least of earning a profit if the project decides to continue.
For now, I'd sell and enjoy my airdrop because it's only a free money anyway. I won't be greedy to wait because it may go back to 4 dollar or less again.