If a person can't adjust the stock mirrors to eliminate the blind spot on a car as small as the Golf, that person is too incompetent to be behind the wheel. A person would have to be a complete and utter moron to set the mirrors at the position they show for the "OEM Mirrors."
http://www.caranddriver.com/features/how-to-adjust-your-mirrors-to-avoid-blind-spots
It's very clear to me that the people who made that video are intentionally setting the OEM mirrors wrong to make their unnecessary and overpriced product look useful. What is sad is that there are actually people out there who will believe the video and get tricked into buying a superfluous product.
ZV