The phrase "What makes you think your brain doesn't need washing" IS part of the brainwashing in AA. It serves as thought stopping.
I agree that AA has helped some people, but not all of us benefit from the program of AA and what irked me while in AA for 2 years, was the fact that it wasn't acceptable not to find AA helpful. No one should have to be convinced of it. If it works for some, fine, if not fine. Additionally, people can and do stay sober without AA.
I hear you Sobermax. Best to you.