His medium is an excellent example of how digital text is different from text written on paper. Not only is his writing done through different examples of digital space (from inside the coding to search boxes) but it is assembled into a video posted onto YouTube. In the video he is demonstrating his subject matter by actually manipulating, moving, and changing the text digitally. This serves to strengthen and support his purpose especially in the fact that it simply gives and example of what he's talking about, both providing a warrant to his claim and clarifying by demonstration. You could say that his medium contradicts his statement that content and form are now separable in that we cannot separate his context from his video (except manually which would be the same as with text written on the paper), or I should say, we cannot yet. Software does exist that can pull text from video (think of the automated postal systems that create digital text from a video feed of passing addressed envelopes), it is mostly just an issue of its availability (as per demand) that it is not in widespread use. It will be interesting to watch the technology and innovation continue to grow and how this video will stay or change in relevancy.
http://www.youtube.com/watch?v=6gmP4nk0EOE