I don't like Bitfinex and I don't want anything to do with them, whether it's Tether or just using the exchange. There's been way too many high-profile incidents where Bitfinex user funds and the funds of other people were at risk in the past, and there's really no telling when something else is going to happen to the exchange while it's still active. The other features of the exchange and its number of pairs are pretty standard and customary if not less compared to other major exchanges that you have access to, and to be honest, they don't offer any sort of major advantage over other exchanges at the moment. I mostly agree with the rating in the blog post in the O.P, though I'd probably rate it at just 2 or 2.5 stars; Bitfinex is very average, and its reputation only drags it down.