I doubt someone like, say, Orwell, who complained about the stultifying use of language, would have any objection to this essay.
There have been a number of surveys of adult proficiency in reading. For instance the 2013 PIAAC. From that, I would estimate less than 2% of people can read this.
If you're in that number, great! So am I. But the complexity of the language still limits the potential audience.
to me it's always seemed like a smooth gradient, so people have a comfort level mainly reflecting the amount of effort they're willing to put in. in that case, writing in the complex style is really selecting for audience effort. this might be desirable, and might even be efficient.
I usually avoid that style, but mainly because it feels so performative.