The future of fiction. Novel versus Graphic Novel

http://www.lemodesittjr.com/blogs/blog/2008/11/future-of-fiction-its-meaning.html
On his blog, L.E. Modesitt discusses the future of fiction, and the decline of the standard novel in favor of graphic novels and Manga…

“The concern that I have about this shift is that reading, fiction in particular, requires the reader to construct a mental image of the setting and the events, rather than merely to observe and participate, as is the case for visually-based entertainment.”

Compare and contrast this to Jane Lindskold, who talks about graphic novels and manga in more positive terms in “The Shortcomings of Words”
Considering that Lindskold is younger than Modesitt, is this a generational thing? Which one of them is right?