You're not, and you beat me to writing the same comment by 10 hours.
Writing is the problem of communicating ideas, and doing to to a sufficiently prepared audience, effectively.
The problem with stunts such as this -- and there are others, the "if you stop writing for 5 seconds your text starts disappearing" demo a few weeks back comes to mind -- is that they confuse the medium with the message.
Yes, it's possible to have confusing writing on account of unfamiliar terminology. That's a frequent problem with many Wikipedia articles, or much academic writing of the past few decades (older works -- say, 1950 and prior, to the 18th or even 17th century -- are often far clearer).
But the problem most often isn't just the vocabulary, it's the structure of the writing. Pop open a book of Darwin or Adam Smith (I've been reading both) and turn to a random page. Once you get over a slight old fashionedness of the writing, the thoughts are clear.
It is impossible to tell a narrative clearly if you've not organised your own thinking about it.
I've been doing a lot of thinking ... well, about a lot of things. One of those topics is of data and narrative, and the difference between a dry factual presentation (say, a data table, or a simple list of events) and a story which weaves these into a consistent whole. Our minds typically work very well with narrative, sometimes too well, as false narratives can be constructed. But the best presentations I've encountered include both solid facts and a story which ties them together. Finding an author who does this well and with skill is truly impressive.
And the good ones expand your vocabulary. Another point, and one to keep in mind.
There's also Einstein's dictum: make things as simple as possible, but no simpler. The same applies to language.