Once you know your demographic, write your content for it. Sometimes, that means exhaustively-edited, scintillating prose with a prodigious range of vocabulary to challenge your readers. At other times, that means miniscule words in micro sentences. I'd call that simple style "Hemingway-esque" for the former set of readers, and "easy reading" for the latter.
Novels, essays, and poetry benefit from, nay, require elegant variation and complexity of thought, but lists, articles, and instructions are the opposite. You may inspire the imagination with wild prose, but you reach the widest audiences when you can keep your words simple and precise.
Flesch-Kincaid Grade Level: 11
Write for the people you are trying to reach. Sometimes that means getting fancy, and sometimes that means simple words and short sentences. The "short and simple" style is great for lists, articles, and instructions. Keep what you're writing to a fifth grade reading level. That way, a lot more people will be able to get what you're trying to say.
Flesch-Kincaid Grade Level: 5
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