I think one fact needs to be understood that the method uses thumb (of a single finger) for all the typing..

I just did a small experiment.. I took the last text I sent from my phone (about 300 characters) and tried pseudo-typing it according to the keyboard the video explains.. and man, my thumb hurts! I would really prefer if there was a way to input text with multiple fingers without slowing down.

wonder how tiring it would be to type everything with this method.