I don't really see tether going away for these reasons. Binance, Kucoin and other exchanges use USDT, do you really think they would risk their entire platform without making a checkup on tether ? They aren't doing anything illegal and they're not located in the US so no problems here. It is alarming that they do not garantee they will take back their tether but it's probably just to save themselves if things hit the fan. I don't use tether because I'd rather trade ETH pairs for potential growth but I think this is only fud and nothing more.