Jon a leader?

After the deaths of the guides, I believe that Jon was looked up to as a leader. Even though he had no previous high altidude experience, Jon was always hanging out with the good climbers climbing without using the ropes. After the major climbers died, I think it would be assumed that Jon a leader. When the South African expedition had a radio, the climbers asked them to give the radio to Jon. I believe that the responsiblilty of leadership fell upon Jon when the guides died.