So here's my take on this:
IIRC the map of Zelda: BOW was on the Gamepad and people rightfully expected more features to be on the Gamepad, stuff like an inventory and additional gimmick stuff.
Now they came out not only saying that the game is completely playable with a pro controller, but they also ditched the entire Gamepad stuff: the map is on the game screen just like the inventory and equipment screens, there hasn't been any touchpad-related stuff in the game and also no waggle in sight.
What I can conclude from this is that the NX might launch with a more traditional controller instead of some gimmick
There was a Gamepad touchpad message in one of shrine segments and Chiko used the Gamepad gyro.
Not being able to use the Gamepad for things like cooking stuff doesn't seem like a good idea to me.