Do you really think Wilson is trying to get rich from this program? He is obviously promoting this work because it works. He has a free program on the site anyone can follow. You don't have to but there supplements you can match them and buy them in the store. And also if you don't have enough money for a hair test they will work with you.
I just think the program works on such deep levels that people start doubting it is working because you feel way worse before you start feeling better. If you don't trust in the program and let the healing run its course I could see how you could sabotage your healing by doing all sorts of shit counter productive to healing like taking medications, herbs,bad diet etc.