I think it's more of an exchange medium, like I have a bunch of bitcoins but you don't want to take the risk of bitcoins on so you make me convert to a stableco

I think it's more of an exchange medium, like I have a bunch of bitcoins but you don't want to take the risk of bitcoins on so you make me convert to a stablecoin where you can then convert it to usd at pretty much whatever time you want. but you're right it's mostly a solution in search of a problem, you're losing the 'make distrubuted untrusted sources trustable with lots of math/polution' property that crypto claims to solve and with a classic bank with lots of extra math/polution when a strong system of money transfers for USD already exists with a fraction of the computational/polution cost.