Plain Writing has a long history. I was shown an example of hard-to-decipher calligraphy that (I'm told) was used by the Vatican when some higher-up didn't want the meaning of the missive to be easily understood. Herre's two to hate: "situation" e.g. children are in a play situation (used to be called playing), and "service" as a verb. We had a speaker for a professional training day tell the entire staff that we were working there to service the patrons of our library. Nobody laughed or seemed insulted. the only time I've heard service as a verb involved either brothels or artificial insemination (a bovine brothel?).