What i don't agree with is that he focuses on the older generation, his mom, when the problems he describes won't exist as much for younger generations. His mom started using a computer past the point where it was hard for her to learn things. Of course it will be confusing to her.
Coming generations grow up with easy access to computers, and will know how to use them well. Eventually we will get to a point where very few people are computer illiterate.
Some anecdotal evidence. It took my mom 3 months to figure out how to make an itunes account, another few months before she figured out how to install an app. My 3 year old son had to show her how to play movies, on both the iphone and on boxee.