It's very strange how people approach this story. The entire mentality of "He's still homeless so obviously this was a waste of time." is dumb. Yes, there are multiple issues that need to be dealt with when you talk about re-integrating someone into society, but one of the biggest issues (perhaps second after any mental/emotional trauma) is the ability to earn money.

Leo has been taught a skill that has earned him money, and one where he can continue to develop this skill and make more money.