They know this is the only way they can make money fir themselves. If they should go into trading their is nothing for them because they have learn trading to gain profit from it. One thing I noticed about people like this is that if they claim they are expert and have some trading lessons to give out, people would want to listen to it because they need help too learn in online lessons for them to be able to make profit from trading. Every trader on online platforms are claiming to be professional traders. Because of the numbers of fake traders on social media I will prefer new traders to go for a physical trading academy to learn trading better than what we have on social media.
The courses you can attend offline are many times more expensive than what you can find online, and very often you will find the same people you can find on social media, so good luck trying to learn anything from them.
If people really want to learn how to trade then they need to learn the basics on their own, and once they have mastered those principles they can buy a few books that were actually written by expert traders and learn from them, but this is difficult, time-consuming and boring, which makes it incredibly unpopular among most aspiring traders.