The author's behavior is, to some extent, an attempt at anti-conformity by traveling in a way that he believes most people don't do (i.e. by staying close to locals, staying longer than a few days, avoiding popular places to experience authenticity). I think most people would in theory like to travel that way. Places that feel authentic draw people and become popular, which eventually makes those places feel less "authentic". That's the paradox. If everyone traveled and behaved like the author, then, in time, there would be less "authentic" places to discover.