What I gathered from the post was that it was more of a challenge to see how OP would do without any sort of stimulation. I think that's the fundamental difference here, OP's experiment is an extreme, where you go to no stimulation at all, while the Sabbath is more of a shift in sources of stimulation. Still valuable, and a lot to gain from it, of course.
I'm not able, not interested, in doing nothing, but I'm interested in ways that help me look at the world differently, and in the case of the blog 's intent, i feel my approach has validity, albeit in a different way.