I use my iPad less frequently than the author of this article. I use a combination of my Macbook Air 11" and my Nexus S. It works fine for me.
The only things I ever use my iPad for are games and air travel. I rarely check my email on my computer anymore, so good is the experience on my Phone.
The problem I have with this article is that I suspect that the author would feel the same if he had an iPad, but he wouldn't have written this article.