While I agree with the sentiment for the effect its adherents want to have, but... Why not just "Communicate clearly"? - Don't add fluff - write as plainly

While I agree with the sentiment for the effect its adherents want to have, but... Why not just "Communicate clearly"? - Don't add fluff - write as plainly as possible - write as precisely as is reasonable - Only make reasonable assumptions about the reader - Do your best to anticipate ambiguity and proactively disambiguate. (Because your readers may assume that if they don't understand you, what you wrote isn't for them.) - Don't be selfish or self-centered; pay attention to the other humans because a significant amount of communication happens in nuance no matter how hard we try to minimize it.