Disappointment stems from attendees expecting a cultural phenomenon and getting a show; the expectation that Burning Man is still important but finding it's just a show. You don't get this problem at Disneyland because and talk of 'Disney spirit' is tongue in cheek.
Here are some more substantial questions than the sort of feel good straw-man in the article. What new ideas have come out of it in the last 15 years? How do you create culture by showing up for a weekend to a catered camp ground and show? Is there any overlap at all to what attendees think about the meaning/point of Burning Man? So if you come west just add it to the Vegas-Disneyland circuit because that is all it is now.
Indeed there is one advantage to Vegas and Disney, the cops don't shamelessly hassle gay people.