For the HN audience, #4 is the most relevant one. Too many things I read here have high school-level writing. The authors cared more about getting their half-baked opinion out on their Medium blog over proofreading (excluding ESLs). One of the best lessons from college is when one of my history professors metaphorically tore me a new asshole for not knowing how to write on one essay, and out of pity, gave me a grace period to fix it. He highlighted enough of my superfluous fluff that I finally got writing and how one must write as little as possible. I had other writing-intensive classes after that one and never had such an event happen again.