Congratulation OP. I did see a lot of your questions in Beginners and Trading discussion boards. I am glad to know that you are off to a good start. There's always an opportunity to learn something new. Keep learning every day 
I think to some extent it was a smart move in trading terms so long as the coin pumped, and he bought and exited minus making losses. So many coins are jokes in the market, but I believe most of us are here to make some profits and not to just buy and hold the coin for eternity. If buying and selling a meme coin can double your investment. Why not trade it?
Beginners are really lucky. Many trading groups have advised buying dogecoin, but I would still not buy this coin. When you have been in the cryptocurrency market for a long time, then before buying each coin, as a rule, you analyze the market well and try not to buy meme coins.
I think to some extent it was a smart move in trading terms so long as the coin pumped, and he bought and exited minus making losses. So many coins are jokes in the market, but I believe most of us are here to make some profits and not to just buy and hold the coin for eternity. If buying and selling a meme coin can double your investment. Why not trade it?