They're not worth it in my opinion, to be honest, I think that you're better off self-learning and at the same time gaining experience be it actual or paper trading, you're good doing those two rather than courses, most people that offer this course don't teach the secret to making money, they want to make money out of you.
I don't think like you said they are just to make money from us. Some Telegram channels even provide free courses. This started from the intention to learn trading techniques, if we are active in learning free things we can use them well. And for me needed more direction than experienced people when I was a beginner.