I think using an executable format like in the article, you'll find it's not actually that much harder to read than a Word document with proportional fonts. And I'm not sure where you need screenshots if it's about doing things on a non-Windows system, even if that seems like an odd transition at first :)
The images could be for things like performance graphs, interactive menu choices, photos of GPIO wiring etc. Not a huge loss to not have them, but given it's dead easy to add to a Word document, why not?
