So it's like, on one hand it's not like "I'm a genius trader, buy my course for $3k and you will be too" because the people at the top actually, (mostly) demonstrably do the thing they claim is possible. And it's not like an MLM because there is not really any pyramid scheme dynamics involved. But on the other hand it's a market that only exists on the buyside because enough people believe it exists on the sellside to build for it, thus generating demand on the buyside.
I am very skeptical as well and I think there is a lot of truth to "those who can do, those who can't teach" adage. It's one thing if you are in "who can't" group because you are older/retired/done with it after many years. It's another if it's a guy in his 20's or 30's selling courses. Those in my experience are almost always just snake oil salesmen.