The purpose of King’s letter is to cause negotiation to fight crisis.
There's no question to answer??
Objectively, chapter 16 of "Journey into the Wild" describes McCandless's confession to Gaylord Stuckey to spend the summer alone in the bush living from what he finds. The exact words that are quoted are: "He said it was something he wanted to do since he was little. He wanted to be isolated, without seeing an airplane, nothing that reminded him of civilization, and to prove to himself that he could cope on his own, without the help of anyone."
No specific allusion to Alaska is made. The other accounts of the dialogue between these two men are all about Chris's family and the specific story of the bag of rice.