Matt, you and I are on the same page on this issue.
I can see no reason to hunt whitetails that are penned. There is a virtual whitetail population explosion in the eastern US.
The "rationale" that is probably used by the video makers is that they are trying to market videos, and yes, size does matter. Sad, really, when you think about it.
Sadder, still,that millions of hunters take to the woods every year and are deluded into thinking that they fail if they don't kill a B&C or P&Y buck. Any fair chase deer is a trophy, particularly if it is taken on public land.
Good luck, and good hunting!