I know what the OP means. You see way's to earn big everywhere. Btc facebook groups are full of those scammers. I find it intertaining to see them talk about making 1 btc a month/week/day without making that kind of money them self...
How are you going to promote such a thing when you can't accomplish this on your own ? Hard to figure that there are still many people falling for such tactics.
Believe me there are a ton of people that fall over the same speech over and over again but this happens not only in bitcoin it happens everywhere, just Google make money or similar terms and you will find a bunch of outdated methods that do not work or people charging you a lot of money for their method and then they do not teach you anything useful and then you realize that their way to make money is to sell those expensive courses to people like you.
Everyone has its own ways to earn money just like them. But you have rightly said, you should not run after these kind of things. I must say you need to discover what you are good at. And then use your quality for making money.