I'll be honest with you, which decentralized exchange has a hard fiat exit point? They all require some form of relative price strength to be maintained in order to not collapse. And you're still going to have to find a way to get your stuff out in time.

And how much volume is done at exchanges only stocking tether compared to the ones that don't? This stuff is about to get real confusing and real messy and real heartbreaking for many, real fast.