Where the Kim family got lost is very close to where I live. It is a brutal range of mountain and no one goes there in the winter. I have backpacked and hunted in that area and where Mr Kim was found is an area where no one goes, ever.
Many friends of mine worked hard to recuse this family. By staying with the car mom and children were fine. He walked off the edge of the road down into deep canyons with no hope of survival.
With infrared instruments the rescuers were able to track his progress and knew that he was traveling about a mile a day, if he had gone into a clearing (he went through some) and stayed there he would have been found in time. They dropped "care" packages for him in his path containing food and signals and many other things that would have enabled him to survive.
A couple of swat team members even rappelled into the canyons at great risk to themselves trying to save him.
His family hired 3 private helicopters to help in the search and it was one of those that located his body in the creek.
Honestly many people put themselves at great risk trying to save this man and they are drained emotionally. The Sheriff who made the announcement that he did not survive broke down on camera. It got personal.
Here's my thoughts on this entire episode. Around here, every winter, city dwellers make serious mistakes and these mistakes cost them their lives. Why continue to drive on a road when you can turn back when the snow starts getting deep. Why venture off wearing tennis shoes into the snow? Mr Kim made so many serious mistakes that we'll never know what his thinking process was. Obviously towards the end he couldn't be expected to make good decisions.
I spent time the night before he was found with one of the people in charge of this and they honestly thought they had him located. Opinion was that he had one last night left in him. It was felt he had come across a care package along the way, we'll know more about that eventually.
These wilderness areas aren't a park. They don't have trails and the roads through them always suck. Stay on main roads, don't try to take shortcuts and stay with your vehicle.
By the way, where the car was stranded is now clear of snow.