That was very impressive skill with a knife, and with anatomy. That video was essentially unedited! He sets a high standard of efficiency and thoroughness.
One point to remember for those of us in the States, though: in cervids (deer, antelope, elk): don't cut across the spinal chord if you're planning to use that knife again on meat without washing it first. Chronic wasting disease can be spread by contamination with brain or spinal chord. My two cents. Apparently CWD is not a thing down under. Hope it stays that way.