Minds should be open, but it is up to the claimant to prove outlandish claims. It is not for others to see 3 minute Youtube videos and turn off the skeptic's instinct, and go "gosh, it is so amazing." We live in a world filled with fraud, marketing, trickery, deceit, parlour tricks, "magic" and photoshopped images.
Trading is no different. 99+% of the "gurus" who offer things for a monthly fee or "only $8000" are useless. Go to an Investools or Trump University or another of these hotel conference room services. It is all about getting you excited, signing you up and getting the money before you start to THINK about what you are doing. And of course, there is the add-on training - get your "master's degree" of trading for only $12,000 in 3 weeks of classes. You will make these millions too!!!
Idiots are those who believe and send in money without demanding audited statements or other verifiable proof, etc.