He turns 2 or 3 presses into a single press and swipe as well. So if you want 'c' you press the 'abc' key and swipe right. etc...
I watched it again, I was wrong he does demo typing. However, I didn't seem him turn 2 or 3 presses into a single press and swipe. Eg, if you want 'c' you press 'abc' and swipe right (press + swipe = c). On a regular keyboard, if you want 'c' you press 'c' (press = c). I guess you mean that his way is better if you are using the numeric keys, and I would agree, but I don't see any reason not to just use the full on screen keyboard.
What really bugs me about the full keyboard is that commonly used keys are on a separate page. I use comma, parenthesis, numbers, and colon A LOT. Especially annoying is typing passwords that contain numbers. A press and swipe mechanism like the video you posted could work for the full keyboard, so I could get at more characters without flipping back and forth through pages of keys.