The title made it sound like he's a survivalist-type who sustained himself naturally. That would have been way more interesting.
There are countless people who could work but prefer to "survive" by just taking from others instead. It's called "welfare" (not talking about people who need it, for whom it is intended, but people who don't but just take it anyway), and even they don't usually endanger others by breaking and entering, but this guy, well, shrug & "whatever, I'd rather just take people's stuff".
Of course, maybe he was mentally ill. If so, this might not have been his fault, but even in that case, there usually isn't that much to learn from people whose definition of "totally turn their back on society" is to go on being a part of society every single day as takers but totally turning their backs on helping others in return.
Whatever you believe your philosophical purpose is, I guarentee if you take an honest critical look at it, and what actions you actually take in reality (rather than just promote) to further that goal, you'll find that its nonsense.
Well, that's your philosophy :-)