That link makes it pretty clear what that's all about. The analysis is not wholly
Here's why I'm bringing it up:
"And its non-backlit e-ink display is far easier on the eyes than the iPhone's backlit screen, particularly if you plan to read for an hour or two."
Fairly clear that they think reading for an hour or two is a long time, compared to whatever they're doing on a backlit screen.
I just find this entertaining.