Umm.....did I miss something? Seriously, is there another article that I missed? Where did he say he never did altitude training before, and why are people thinking he's planning on doing anything different in the Tour than he's done over last year? Just because he's 'targeting' the Tour, doesn't mean he's going for the overall. A yellow jersey, a stage win or two and his entire season is a success.
If he lands on the podium in Paris I'll be the first to start asking questions, but the whole premise seems a bit off to me.
As far as altitude, he very well may not have figured out the best option for incorporating altitude into his training, because it's not an easy thing to do. The research is certainly equivocal, and my own first hand experience is that response to altitude is variable, even just in my own training from year to year. So, it's certainly not an easy thing to understand. I know the credo of 'train low live high', but different athletes have difference responses to it, and the same athlete can have different responses to it.
So, I guess I just don't understand your question.