It seems some commenters feel the author was taking advantage of all those people who helped them. I disagree.
I think they are missing a large part of the situation through lack of experience, a selfish focus, or some other different perspective I don't understand. I very much doubt that any of the people who helped him along his travels thought he was in dire straights and needed the resources more than they did (which might be fraud if he had lots of resources and refused to use them in favour of lying to others to take their resources). I don't think someone who picks up a hitch hiker does so because they think the other person will die if they don't so it's worth the driver being taken advantage of.
I would be willing to share resources if someone knocked on my door and asked to camp in my backyar; for pretty much nothing but the expectation of mutual respect between myself, them, and the rest of society. Though I would also offer a meal for the chance to hear about what they were doing and why. No part of that situation involves me thinking they Need my backyard or Need to be fed to live. In fact, I would do it thinking they left a job and a normal life and chose the journey they're on; my assumption would be that when they were finished they would move back to a more regular life. Where I would have a problem is if the person seemed clearly intent on living like that their whole life; taking without giving. So in a way, my expectation is that the person is giving back in the experiences and stories they share with others, in the knowledge and experience they take back into a regular life; I will happily contribute to that. I don't think this changes regardless of how much someone has so I don't think it matters if someone from Canada travels Africa for example. I don't see any reason to believe he was lying to people to make them feel sorry for him.
Another aspect is that often he was indirectly selecting for people who were willing to share resources. By hitch hiking one is excluding anyone who feels they and society get no value from this person. One is excluding anyone who feels they would be taken advantage of by helping a hitch hiker. Those kinds of people just don't stop the car. Therefore anyone who helped him was obviously willing to do so and felt they would benefit more than what they expended to help.