A. McCandless was negligent, his neglect was bordering mal-intent. He should be made an example of, not for his search of freedom, but for behaving stupidly as to put the lives of search and rescue workers in danger, or at the very least putting them to work and depleting funds from the state that could have gone elsewhere. He had an ill-effect on his family and friends, and should have put them foremost before venturing out with little preparation.
B. McCandless engaged in an act of personal liberation. Even if he ultimately died, he at least had the courage to embrace his own version of freedom.
I don't think the people in camp (A) are wrong, but ultimately it's not how I want to live my life - where I have to value the peripheral concerns of society above my most intrinsic desires.