Have you had the fish from well run systems like this? I think it is fantastic. Data point of one.
With all of that said, I'm sure that for people who do enjoy seafood, it'd be quite tasty. The business near me was put together with eco-conscious people in mind, so the care they put into farming- nutrients, food for the fish, etc. I'm sure the difference between their fish and wild fish is a good deal smaller than stereotypical farm-vs-wild-caught salmon or what have you.