Opinions are like chakras, fellas -- everybody has at least one.
Meanwhile you have been given direct reports of Two Bears achieving effective results on at least one case. Why are you unwilling to allow that author to speak about her own experiences? Would it unnerve you in some way if she were speaking sooth? I think she is. You have second-hand reports of others, as well.
As an expert finger-pointer I can assure you that it takes a certain amount of arrogance to point out another's arrogance.
Let me add that I learned a poem, about forty years ago, from one of my teachers, that has stayed with me ever since even though I have not always adhered to it:
There's so much good in the worst of us, And so much bad in the best of us, That it ill behooves any of us To talk about the rest of us!