Obviously you're going to believe what you want to.
But your original claim was that it's practiced by many but kept secret by those in power.
If you don't mind my asking, if it's kept secret, where do you get your data to support your claim of "thousands", which from what I can tell seems to be an assumption on your part...which leads to an assumption on my part that your motives a shaded by your personal opinions.
Please correct me if I'm wrong in that assumption...or ignore me if you're tired of talking about this. :>)