I think the title of the article is misleading. The internet is a tool, and how a person utilizes it determines the results of using it. It doesn't make anybody do anything. From what that author stated, it sounds more like people with ADD or poor thinking skills. Although it obviously is a pop article, he should have cited the studies a little more specifically. You can easily pull sentences from anything to make it say what you want it to. The studies cited could say what the author says, but they usually state their limitations and methods.
I think the internet is great for people who know how to use it correctly for information gathering. It would be more painful than it is without a search engine to find journal articles for all the research papers that I've had to write. The availability of information makes learning much easier. I find myself looking up things that I'm interested in all the time. All it takes is initiative and the info you need is at your fingertips. I also find people with a wide knowledge base more interesting than someone who can only talk about one subject. Not to mention many subjects can be related to each other and knowing a few can help understand one. I hope I made sense (it's 3AM after all).