According to @1HowardWu, without transaction privacy, traditional financial use cases are impossible on public blockchains, because a single customer payment can identify a merchant’s on-chain accounts and reveal sensitive financial information, making stablecoin POS acceptance risky for businesses; source: @1HowardWu on X, Dec 9, 2025. According to @1HowardWu, this privacy gap blocks merchant-ready stablecoin rails at the point of sale, signaling adoption headwinds for crypto payments until privacy features are integrated, a factor traders should account for when evaluating the real-world payments narrative; source: @1HowardWu on X, Dec 9, 2025.