1:1 cash/cash-equivalent reserves, which means the
best they can do is things like US treasuries /
money-market funds
Whether US Treasuries are "cash equivalent" is debatable / depends on the specifics. A dollar is worth a dollar tomorrow. A 10-year US treasury might not.Are you saying the holder of a stable coin is not taking a higher long-tail risk than the holder of a dollar in a checking account of a bank?