Elitist language can be used by any group to partition themselves from others. I'm sure many groups (formal and informal) do it. That said, I believe there has

Elitist language can be used by any group to partition themselves from others. I'm sure many groups (formal and informal) do it. That said, I believe there has to be a floor to the language level you choose, and it's reasonable to use "high school English" as that floor. Besides, I checked out that link (history section) and didn't see anything that screamed "overly clever"...