Anyone consider the possibility that maybe he was WRONG?
Grab a MacBook Air. Place it close to you. Reach up and touch the screen as if you were sliding something off the screen or scaling an image. It feels perfectly natural -- certainly MUCH more natural than using a trackpad to perform the same operations.
Ok. Touch the screen then start to type an email on the keyboard then send the email by touching the screen. Then close window then search by typing. Do that for 8-9 hours. How annoying would that be.