The article says that certain remote and rural areas of Asia still don't use toilet paper. However, this is also true of most of the Philippines, including middle- and upper-class areas in major cities. It's not an issue only of economic stability or access to it, but also just a cultural one. I've been in upscale restaurants in Manila where there was no toilet paper in the bathrooms. They use a little bucket of water next to the toilet to wash instead.