Maybe I'm naive, but I don't feel bad for iFixit. They signed a deal, and then went back on the deal. That means that their professional word is meaningless. Sorry, but where I come from, a promise is a promise, especially involving a business contract. "We weighed the risks, blithely tossed those risks over our shoulder, and tore down the Apple TV anyway" is unacceptable, because that means that they feel that they're above the people with whom they made agreements.
Also, shame on them for saying that their app was "riddled with bugs caused by iOS9." That's a cop-out from a developer that was just too lazy to keep their app current. If you're going to be a liar, and lazy, at least be adult enough to own it instead of blaming others for your POOR work ethic and lack of integrity.