Hmm, well I suppose that is some pretty good shooting there. I guess the more important criteria that comes to my mind is how well he can shoot when someone is trying to shoot him. That seems much more practical to me.
Practical is all in your perspective.
If you think of firearms as nothing but weapons, and shooting as nothing but something you do to protect yourself, then of course range shooting with no distractions and perfect conditions would be impractical and useless.
But remember, shooting is also a sport. Plenty of people go to the range solely for the purpose of testing their own non-combat marksmanship. Non-combat (and non-hunting) competition shooting comes in a myriad of flavors. Maybe you don't enjoy them, but that doesn't mean they're not completely valid types of shooting. And, they're fun.
'Specially when you can make a group like that at 1,000 yards.