Unfortunately the culture of Burning Man requires the excess resulting from thousands of people with the resources to over-prepare. Without this dynamic it's doubtful the event could exist with many of its core principals. There are people in our society that are stretched too thin to visit art museums, but this doesn't mean that art museums don't provide an immense benefit to the community as a whole.
I'm not arguing against the existence of Burning Man -- it does seem silly to me, but like many things I consider silly, it has the right to exist and other people can enjoy them.
I'm arguing against the idea that "any able-bodied person" can attend Burning Man, or events like it. Lots of healthy people cannot afford to attend events like that, for multiple reasons.
I think your argument misses the point because any able bodied person can attend Burning Man if they make doing so a priority in their life. No one is arguing that people who don't care too much about attending don't manage to go, and frankly, even with a bunch of disposable income if your trip to Burning Man was "easy" you're doing it wrong.
I guess we'll have to agree to disagree then because I've been a dozen times and I've met both able bodied and disabled people there from literally every walk of life, including self-described homeless, octogenarians on fixed incomes, people suffocating under medical bills for their cancer treatments, and folks from a dizzying array of far away countries.
