This is a bad deal. Prayers and condolences for the family and loved ones.
Regarding judgement of emergency care, since I am trained to a degree and some here are questioning the guides judgment, I'll comment.
We don't know what his injuries were but we do know the MOI so we know what to expect and what to look for. When he pulled him from the stream there may not have been any signs of life. Even if there were signs of life, the article says "serious injuries to his legs".
Getting hit by a 1000lb boulder is a pretty severe Mechanism of Injury (MOI). He probably had multiple injuries that caused internal and external bleeding. We can't see or control internal bleeding in the field unless it's a femur fracture. If it's an open Femur Fracture that has severed the femoral artery it's worse. He needs the OR. It's very possible he could have had a femur fracture (or 2) and/or a crushed or broken pelvis which means he probably would have been bleeding internally. He needs rapid transport asap. Getting help as quickly as possible is really the only thing you can do besides elevating his feet and keeping him warm. That and minimize it by not moving any more than absolutely necessary. Call for help, then get busy. I do wonder why the guide did not have a sat phone with him or at least a SPOT or PLB.
IF he was alive when he pulled him from the creek, and IF he ONLY had a femur fracture and IF he was not bleeding internally from a pelvis fracture or anything else and IF the guide would have known how to make and apply a traction splint to control internal bleeding and IF he would have had a sat phone, SPOT or PLB on him and IF S&R could have gotten there in a couple hours then MAYBE the outcome could have been different.
When he pulled him from the creek and covered him up he may not have known it but he was treating him for hypothermia and shock. The only other thing he could have done would have been to raise his feet and it doesn't sound like that would have made much difference. One doesn't die from falling in a creek in less than an hour but one can bleed to death internally in that period of time. You can't fix Hypovolemic Shock in the field.
Lets not judge to harshly here guys.
Peace to family.
Perry