I think he is saying if the watch is facing him, the back is going straight across the nightstand, rather than to the back which would require a 90 degree angle. To support what he wants the cable would have to come out of the right or left side (But then would only work for one nightstand side of the bed.)? The video shows it facing the back of the dock. The watch will be in nightstand mode, and the cable will be at the back of the device.
I'm surprised it doesn't rotate to any angle though...
All I want is the charging end that can be plugged into a lightning cable, that way I only have to take one cable with while traveling and not the AW cable.