I shoot it, I retrieve it (often by myself) and process it myself. If 400 yards is to far to retrieve an animal I can't imagine you guys get much actual hunting in....
I think their point is that their age and physical limitations dictate how far the can go to retrieve their bounty. No doubt they have put in a lot of actual hunting time in over the years.
Unfortunately, some of us aren't young and strong. It's a sad reality but rest assure, all young bucks will follow in our footsteps. Sooner than they think too.