I keep asking myself if this is experience talking or just an opinion??
As to all those holes in the training would all of you put your horse's and your life on the line to show there are no holes??
In the real world, the world beside busy highways, flying trains and tricky water crossing you better have no holes or you are dead.
Safely tucked in an arena with walls or fencing all around you is like driving in an empty parking lot and giving advice to others that drive in the real world