I think operative word is 4 or 5 miles... anything farther in than 3 or so and I'm probably camping, it's the camps that are less than a 30 minute walk from the truck that confuse me...I think its very dependent on the elk in your hunt location, the terrain and herd population. During archery season we camp right smack in the middle of where the elk are every year. There's been elk killed 400yds from a tent, elk walking through the small meadow we camp in, elk hitting the wallows in said meadow, commonly elk are bugling 360 degrees around us within few hundred yards. We can go any direction any day within few hundred yards and expect to find elk, rarely are we ever hunting more than a mile from our camp, or you can lay in your tent unzip door and glass from your sleeping bag sipping on coffee, while devising your evening ambush plan. To me it's totally situational, of course I've hunted in places where this approach is not ideal, but man I love our annual spot and the overall experience it lends!
In our case it sure as heck beats hiking 4 or 5mi out at dark, up at o'dark thirty to hike in again, that crap wears me out. I can only say; I hope any of you who hasn't had the luxury of this type of scenario gets to experience it at least one season. Best of luck to you!