Those footnotes have a mix of prescience and just plain wrong. For instance, there's one about how a good open source browser can fundamentally change the industry; and Firefox has in that time gained much ground and helped spur innovation in IE and across the web (as have WebKit and Chrome). However, Firefox was already underway by the time he wrote this, so that prediction isn't necessarily so forward looking.
His opposition to client-side software, though, is less prescient. He says that JavaScript may not be available when you can browse the web on your phone; but JavaScript support is now one of the distinguishing features of new smartphones. He says that writing client-side apps is a bad idea, but the popularity of client-side JavaScript is proving that wrong. Mostly, Java applets themselves were a bad technology, but client side code that integrates with the Web is a popular idea, in the form of Flash and JavaScript.
So yeah, there's one prescient quote in there, but some more that are wrong. And many people were hoping for an Apple iPod/phone for quite a while; see, for example, http://technologizer.com/2009/12/28/iphone-rumors/ (the first list of collected iPhone rumors I found in a google search).