ABCDE co-founder Du Jun has expressed skepticism about the sustainability of the HYPE buyback model supporting a $4.5 billion fully diluted valuation (FDV). In a post on X, Du Jun highlighted the imbalanced risk-reward ratio, suggesting that even if Hyperliquid outperforms BNB, the potential return is capped at threefold. He emphasized the intense competition in the perpetual DEX sector and noted that Hyperliquid has yet to face significant compliance or security challenges, which could lead to a substantial downturn if they occur.