The demand persists because, for a brief moment in 2018–2020, these tools actually worked reliably. YouTube videos from that era still rank high, giving newcomers false hope.
If you're building something for (e.g., understanding how credential stuffing works to defend against it), you should: netflix account checker github work
Account checkers generally follow a specific programmatic flow to bypass security measures and verify credentials: The demand persists because, for a brief moment