I watched that video and he did better than most do when it comes to field dressing. We have a cooler where we store deer for hunters, some years as many as 600, and you would be appalled at some of deer that are brought in to store. Anus left in, sex organs left on, blood, leaves, gut contentsstill in body cavity,some so nasty that we turn them away.
As a former processor I would add the following field dressing tips to those that intend to store or age their deer for a while before processing.
Split the pelvis bone to ensure that all gut is removed.
Split the breast bone to allow for better cooling.
Wash out body cavity with water to remove all blood, this can be done in the field by simply carrying a gallon jug of water with you in your truck.
This will make for much better table fare.

xbowbarry