What's the story with Bitfinex (or even Bittrex!) and the Tether situation? It sounds stigmatized and instilling terror as the medium of exchange, but it's all

What's the story with Bitfinex (or even Bittrex!) and the Tether situation? It sounds stigmatized and instilling terror as the medium of exchange, but it's all you really have when using a system like that internally (I have to use Tether as an intermediary to swap between coins). Is that just another component in this house of cards? If Bitcoin takes a dump, will people panic-sell other cryptos? If another big crypto explodes, will people panic-sell other cryptos? The problems and risks in this -- what feels to me, like -- a system, seem interconnected by human psychology if not ACTUAL structures like the exchanges.