Former UK Prime Minister Boris Johnson has reignited the debate over Bitcoin's legitimacy by labeling it a Ponzi scheme in a recent post on X. Johnson's remarks, made on March 13, 2026, underscore his skepticism about the cryptocurrency, citing investor losses and questioning its intrinsic value. He highlighted cases where individuals, lured by profit promises, suffered significant financial losses, suggesting Bitcoin's structure exposes investors to potential exploitation. Johnson's criticism also targets Bitcoin's decentralized nature and the anonymity of its creator, Satoshi Nakamoto, arguing these factors add to the risk. While Johnson's comparison to a Ponzi scheme is contested, as Bitcoin lacks a central operator and promised returns, his comments reflect ongoing concerns about the cryptocurrency's volatility and market dynamics. Despite these criticisms, Bitcoin's decentralized design and capped supply differentiate it from fraudulent financial models.