Louis is contrasting his personal experience with both his personal experience and demographic averages. What Louis did is not average; and there are other outliers who are not spending 32-37% of their income on housing. In fact, when he suggests moving to the outback he is simply rephrasing a suggestion of "spend less on housing". Moving to the outback and getting a job as he describes is one way of doing that. Living under a bridge and showering at your gym every morning might be another.