I read an article in the newspaper, and it mentioned that the guests avoided using the bathroom because there was no toilet paper, so I assumed they were using family cloth. It also said the washer and dryer was in the apartment building, and that they didn't have the heart to take away the vacuum cleaner from the maid, but that they had already taken away paper towels from her.
They're not perfect, it's a journey for them, as it is for all of us. I think their extremeness is coming from a total mainstream mentality and changing that. They are making many(but not all!) uncomfortable sacrifices. The whole US society is about having all the comforts, so it is extreme when people give up a lot of them. But if he gets enough press, it'll make other people think about what they can do.
I mean, I know someone even more extreme, in that he lives on one of those anti whaling ships that goes and rams whalers.