The clear message of the article is about increasing awareness of users' limitations, but I'm also wondering what can be done to increase people's computer literacy.
I think those are two sides of the same coin - if we understand the user better we can make software that's easier for them to use, which in turn makes the user more confident and better at using the software. The goal shouldn't be to take away the powerful tools and replace them with simplified tools, but to make the learning curve shallower so users can learn to use the software and eventually to the point where they can use complex features if they need to.