Fascinating article and a great suggestion to make Paper better for wait-in-line-consumption-mode.
However, a few counter points I can think of -
- Most people use the phone in 2 hands (not the t(w)eens, but most older people and they form a good chunk of iOS and facebook users)
- Facebook's paper is designed for a sit back experience.
- A large set of people I know who are right handed, use the iPhone left handed when using in one hand.
This is not to debunk any of the claims made here as I am no UX or gesture expert.