Use the one-inch move to manage a flip
The coach prefers impact with the hands ahead because a flip can produce fat, thin, or clean contact at different points. In wet conditions, moving the ball back can help the hands arrive farther ahead and can manage the symptoms of a flip, although he explicitly does not recommend continuing to flip.
Channel: SagutoGolf
Watch official source at 4:35Why this context matters
This is symptom management for wet play, not an endorsement of flipping through impact.