Katz's own research point is that the risk is not the same everywhere. Impact "depends on country circumstances: the strength of macro frameworks, whether currency substitution is already prevalent and in what form, the financial market structure, and the availability of local-currency stablecoins." Families and small firms may save on a transfer yet pay more at an illiquid on-ramp. Local banks can lose deposits. Governments can lose policy control. Users can become dependent on a foreign issuer they cannot vote out. Protocol transfer is cheap. Operator screening and cash-out are not. The legal wrapper is a claim on an issuer, often abroad, often able to freeze. Those are different facts. The IMF's Nigeria case study is the corridor file, not a global verdict. It examines adoption, remittance costs, measurement limits, and the need to adapt global rules to local conditions. That is the right unit of analysis. Inflation, capital controls, banking access, and local-currency alternatives change the complete cost, speed, reliability, legal status, and recourse in each corridor. One inclusion headline cannot cover them. Katz was also clear that local-currency stablecoins are not an automatic answer. The logic is appealing: channel demand toward a domestic instrument. The mechanism can run the other way. Once a local-currency stablecoin exists on the same chain as a dollar coin, conversion becomes an on-chain transaction. "The friction created by traditional financial intermediaries that currently gives authorities policy levers to manage capital flows could disappear." South Africa, in his account, has seen limited traction for dollar coins and even less for rand-linked coins, a reminder that liquidity and network effects still sit with the dollar. The live lesson is demand and credible backing, not the existence of a local ticker. The IMF's April 2026 Global Financial Stability Report chapter on cross-border stablecoin flows documents rising flows and outlines liquidity, run, spillover, and macro-financial risks for emerging markets. Policymakers have not settled how to balance access with reserve, capital-flow, tax, and consumer-protection goals. Wallet transfers do not reveal purpose or final settlement. Data gaps are not a reason to treat the product as inclusion. They are a reason to keep corridor files: issuer, chain, local exchanges, banking partners, fees, spreads, cash-out limits, freeze rules, and policy changes. The claim is not that dollar stablecoins never help a household. The claim is that help is a corridor fact, and that importing a foreign cash window is a monetary-policy fact. Test the complete cost. Name the issuer. Do not confuse a bot-heavy volume print with a payment that landed.