Sure, but that's what OneNote is for (and there's a touch-optimized OneNote app). The current weak touch support is still good enough to do basic editing on tablets, and is definitely fine for viewing. Touch-optimized interfaces for all parts of the suite would be nice, but I find it hard to fault the Office team's prioritization.
For example, when it comes to meeting minutes, Microsoft Word doesn't stack up well against Evernote.