Personally I find indiehackers unique amongst get rich quick schemes because it's very transparently a community of people trying to get rich quick by building small apps for other people trying to get rich quick building small apps. It's not necessarily that the influencers are deceiving anybody (I think some do), they really do build apps like that too, some of which are genuinely successful. They're not selling advice.
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.