Agreed, I understand the concept. My comment was more towards the title of the article over the production itself. It's supposed to be a bit of a joke but turns out to be misleading.
So... not a drop of CGI but still using a 3D software, 3D rig, motion capture and probably some animator cleaning up that mocap data to do it. Feels like quite a lot of CG going into this. It's still cool concept, not as "in camera" as they are trying to sell it :)