These are pretty simple rules of information delivery (at least up to page 43 of this 125 page power point). They've been around for a while but they're most useful for mid-level corporate communication and things resembling that.
Fiction writers and writers trying to convey more sophisticated ideas haven't used them (or haven't only them) in the past and generally don't at present.
Yes there is an obvious advantage to fuzzyness in writing as it lets the readers make their own path in a story. But not everybody likes that, lots of readers enjoy being taken for a guided tour.
For me it is rather that this style doesn't encourage my own thinking. The idea is kind of the opposite, that is that simple writing should free mental capacity, but in my case it just puts my mind in a relaxed state where it can only consume information, while more sophisticated style kindles creativity and interaction with what's written rather than pure consumption
Yes! I've had this _exact_ thought while reading "Sell Like Crazy". Such a badly written book in this sense. Tons of ideas and methods but it doesn't truly stick in my mind if everything is ELI5'd to infinity. I'd rather read fiction (e.g. Murakami) where I have to close the book and think before I continue.
