Can this be considered a bottom-fishing? Why did it drop again after he bottom-fished? Is it just an act again? Buying at the bottom while shorting to harvest? Are whales this bad?

A certain whale bought 30,000 ETH and 600 BTC today through OTC

According to Lookonchain monitoring, a certain whale bought 30,000 ETH (approximately 54 million USD) and 600 BTC (approximately 5.67 million USD) today through OTC. The whale transferred approximately 112 million USD USDC to Wintermute before receiving ETH and BTC.