For me, it depends on the video he is referring to. I can see a very strong use for it in non-fictional circumstances (or even in the pseudo-non-fictional "glossary"-related aspects of some fiction). Thinking in terms of things like science magazines and books, educational texts, historical books (eg. showing progress of an empire or a war front) I can see distinct advantages of video portraying animated diagrams, or "real life video" showing a small recording of an actual event being related (small historical incident, scientific process, et cetera). This doesn't mean "embedded video" of a "full-length documentary" kind, but small (eg. 30 second) videolettes that assist in comprehension of something being explained.
For instance, I would have found small, quick, animated diagrams or visualisations while reading
The Elegant Universe wonderful in portraying some of the mind-twisting dimensional concepts contained.
So, yes, I can see its value in some areas of (e)book publishing, plus it might open another unexplored field in which new forms of creativity can occur.
However, yes, when I'm reading (a good fiction book), I generally just want to read. There's a difference between an historian or popular science writer skillfully incorporating some creative video/animated aspects into their book, and a publisher throwing in video characterisations or forcing artists to offer video statements in the "ebook".
Cheers,
Marc