The whole point of USDT is to use on it exchanges that can't get USD on it. If you can hold USD, there's no need for tether, and there's no need to go the extra

The whole point of USDT is to use on it exchanges that can't get USD on it. If you can hold USD, there's no need for tether, and there's no need to go the extra mile put your faith in a foreign corp that supposedly has to money to back it (buy risking your USD to buy them). The Tether foundation itself isn't going to buy back the USDT because then it will just have to burn them because it no longer has the supposed dollar backing it.