I think the labels are not very helpful, but tying each level to 0.01% of an individuals net worth is. For example, I still don't flinch at paying 1 or 2 dollars more for items at the grocery store, but I do for paying 10-20 dollars more for items at a restaurant.
"Travel" can mean grey hounds and motels, or first-class flights and luxury hotels. Philanthropy can be donating $100,000 or giving a buck to a guy on the street.
The key take away from the article, at least for me, is how much you flinch at extra costs, and that being about 0.01% of what you have in the bank.