I hate to repeat what others have said, but the title of this is just ignorant.
In rally, the driver does not know the course, but needs to drive as fast as if he did know it. More than driving by looking ahead, you have to drive based on what the co-driver says. The co-driver tells you what is beyond your vision.
Failure to listen to the co-driver, or failure to drive based on what they tell you can literally be a death sentence. (It goes both ways, a co-driver calling out a single corner wrong can kill you just as easily).
Labeling this as “Annoying rally driver coach” is the automotive equivalent of labeling a Noam Chomsky talk “Old guy flaps gums, uses big words”
