Agreed. Some people think that big words are good. Me, I think good writing should be like good code; short and easy to understand.
It's also very possible to get the gist of a word, based on where it is placed and the words around it -- even if you don't know exactly what it means. (Obviously I'm not suggesting that for something like documentation writing -- but by the same token I would never think that limiting yourself to a 1,000 word dictionary for something as important as product docs would be beneficial in any way).
So, it's a joke, but maybe a useful thought exercise, too.