Of course it would have been impossible. One in four climbers on K2 does not make it back. This is a non-story, as tragic as the loss of life may be. 25% mortality rate. You have better odds rolling a die for your life. Punintended.
(I'm not saying they shouldn't have stopped to help; only that the likelihood of him surviving was near-zero.)
DEATHS ON K2
K2 is considered one of the most difficult climbs. For every four climbers attempting to summit K2, one climber dies. In comparison one in every 20 attempting to climb Mount Everest dies. As of June 2018, only 367 people have completed the ascent of K2 and 86 had died trying. As of 1995 113 people reached the summit of K2 and 48 died. In 1995 seven people were killed in brutal storm that raged for nine days. Thirty kilometers away a rock climber froze to death in a hanging tent. In August 2008, eleven climbers died over two days (See Below), In a 1953 attempt, Art Gilkey was killed, either in an avalanche or in a deliberate attempt to avoid burdening his companions.
What's happened to them? They were so popular, and still would be if they kept releasing videos. Now it's one or maybe two a year.
Presumably they have other projects on the go. Anyone know what, exactly, their day jobs are?