You might assume that as a fan of magic I would be all a-twitter, but I'm not. That's because I'm a fan of magic, not endurance stunts. Blaine was interesting when he did street magic, but what's the point, now? Are we all supposed to go along with him on some kind of Zen minimalist journey? We already know that people can live in hardship for long periods of time, and it's not like he's doing it for a political cause. It's just a stunt, without even any major skill involved, except perhaps staying calm and the breath-holding at the end. Houdini would be bored.
Scuttlebutt has it that Blaine cooks up these isolationist bits partly because he just doesn't like speaking with people. So? When am I going to get fame and big bucks for sitting in my office oubliette, eating lunch at my desk and avoiding phone calls? Because I could do that for far more than a week straight.