The most likely outcome for the death of USDT is a shutdown initiated by the US. Tether only exists to bypass regulations. Soon enough they'll punish that and put the frighteners on the exchanges trading it.
Lol. Yeah they'll shut it down eventually, only to replace it with their own one day.
Tether is essentially what USDFedCoin will be when it launches. Both are fractional reserve, inflatable, and backed by nothing.
And Bitfinex is really not getting it if they don't think they have been put on notice for all their scamming. I wouldn't be surprised one day if their office gets raided and someone led out in handcuffs.