A lot of people are worried about stablecoins being inherently dangerous because they aren't FDIC insured. FDIC insurance is specifically designed to counter the risks of fractional reserve banking, it isn't tailored to the different risk profile of a narrow bank or a well-reserved stablecoin. If the narrow banking model (or stablecoin reserve model) functions correctly, the depositor's funds are inherently safe from the types of failures FDIC protects against, making the insurance redundant for that specific purpose.