Seeing how it works during stage demos doesn't convince me that people will feel as empowered as they seem in the promo videos. I've seen it happen with Kinect, and I feel like it's happening again with Hololens.
He's trying to say that everything works, (you know, the hard part) besides the FOV. The FOV isn't a decades thing. If they "fix" the FOV, it would pretty much work as advertised. That's the point he's trying to make. Kinect couldn't do what was advertised well. This does do it, but in limited FOV. Oh and the occlusion as well.