if theyre selling cloned cards, cash app glitches, other fake sounding shit, they're just lying.
sometimes people sell legit methods because theres a lot of parts required to pull off a play and they might lack the skills or resources necesarry to pull it all off, so they sell the method cuz thats all they got
sometimes its risky and they retire from doing it once they make enough money to not be willing to risk their freedom anymore, but selling the method is less risky and passive income