You may lose more money if you join a trading competition because only traders with high trading activity will be able to enter the leaderboard, the more trading volume you have, the higher your position will be, while you want to regain liquidity after losing a lot in memecoin, joining a trading competition will not help your target at all. It is better to trade normally or join an airdrop even though the airdrop is no longer promising, but the risk of losing money is less.
It makes it look like that one should trade just for the sake of trading and not to strategically buy and sell later.
The exchange makes money off every trade fee. So for the exchange it is happy hours. I would never advice anyone to participate in such contests where you can easily make wrong rash decisions and lose money just to be on the leader-board or be given a useless title.
Casinos have these leaderboards only to stroke the ego of the highrollers, so they lose money and exchanges are doing the same, because spot trading is less profitable for the exchange.