Is it Accurate to call HTML5-Based Code Forking “Graceful Degradation”?

But sometimes it seems that HTML5 evangelists can get a little bit carried away in their zeal for promoting these new technologies and features, and they inadvertently end up misusing terms.
In my opinion, Bruce does this in Issue #204 of .net magazine, in the recently-revamped “gallery” section that now includes HTML5 websites.