This is a solution for a problem that's already solved, that is, booster maneuverability and accuracy. But they've just demonstrated that the booster is accurat

This is a solution for a problem that's already solved, that is, booster maneuverability and accuracy. But they've just demonstrated that the booster is accurate and controlled enough to land on the chopsticks, and they have over a decade of experience in making rockets land accurately in a specific zone.