Those simple strategies you undermine are enough for you if you work on yourself. I was shocked when I realised someone bought a trading strategy for $3,700...oh my God!

And guess what, it failed him, what a waste!
You can imagine the high risk one is undergoing just for the sake of getting a win, why on earth do people like going above their limits and things they are not worth risks taking. Buying a strategy for such huge amount and at the end he lost it all oh what a waste indeed. Even with a good strategy one still don't get a win cause trading seems like gambling that tends to be unpredictable.
Well, let me just say this is pure gullibility, nothing more, but we can't 100% blame them.
First, those influencers and sellers have sugar-coated mouths, and of course, the person who would part ways with $3,700 for a mere trading strategy can't be poor. So the level of thought and how they view money is different. They might also be new to trading or want the premium best strategy, believing such would deliver it after the initial proofs shown and promises made by the sellers.