Most of the problems with Tether have little to no effect on people who use it. It's a problem of the exchanges that use it. I'm guessing that nobody takes Tether off the exchanges; it's mostly used as a temporary store when a trader wants to be out of the way of volatility in other cryptocurrencies.

Exchanges like Binance make sure you won't take USDT off the exchange by charging a ludicrous transaction fee to withdraw it. So, if you are trading USDT against other people on the exchange and the exchange itself, it is only a problem if the exchange needs to convert Tether to Fiat. This could affect the solvency of the exchanges, but I think there are plenty of other issues with the exchanges we use that will be a problem before Tether. I mean, does anybody really, really trust any of these exchanges?