Sounds like you have a creative definition of the burden of proof.
Not Scientology treatments, which I know nothing about.
I know that my mom, a Baptist,, tried acupuncture on the advice of a Unitarian friend, who it had worked for greatly. And it didn't help her a bit.
I know that I have tried holistic medicine on the advise of a friend with a questionable religious practice and it has not worked for me, yet it has worked for her.
My conclusion? Belief is tied to healing within the parameters of my experience. I've had no experience with Scientology and have no beliefs or need to provide burden of proof for something I have not claimed a belief in.
When I mention Scientology specifically, sing its praises, then question me specifically. Until that time, take your self righteous, presumptuous, pipe mad smoke it somewhere else.