Oh yeah. I totally agree that the source has its own objective. I wasn't supporting their specific approach at all.
You are right that the key take away is somene saying "I think my own idea, which I happen to be selling a book about, is great, here are some stats that I have crafted to support my own agenda"
The point I was making was simply that people who care enough to try something, anything, with thought (like looking for a new methodology to try out) are likely to be more successful.
Like a diet. The specific one doesn't matter so much. It's the fact that you are actually paying attention and making a specific effort.