I didn't read the whole article. I stopped here:
Buttons also resist. Over time, their use causes stress to the human body, known as carpal tunnel syndrome.
The guy says he owns "an e-reader or two." I always feel that once I get engrossed in a book, I don't really "see" the pages any more, whether it's a paper book or on my Sony. Once you're into it, you just read, right?
I didn't know I was in such danger of carpal tunnel syndrome from occasionally pushing a couple of tiny, responsive buttons.