A relevant historical fact here is that the reason the snake oil salesman is a fraud isn't because snake oil is ineffective, but that what he's selling isn't snake oil.
If say it's both with snake oil.
And we see both in the study. The charts can't predict anyone and the claim of even having a consistent system falls apart.
Sure, that's the scientific method / debate; person A says snake oil does not work, person B says it does, let's have it out.
> Do not be so open-minded that your brains fall out
That's not how the scientific method works, at all.