Arbitrage traders make 10x returns on new DeFi platform for wrapped assets

A lucky trader turned 0.34 BTC into 4.6 BTC in just one swap.
Source: Arbitrage traders make 10x returns on new DeFi platform for wrapped assets (https://cointelegraph.com/news/arbitrage-traders-make-10x-returns-on-new-defi-platform-for-wrapped-assets)
Would appreciate your opinion about this