Upon reading what that site says, I see it (by what it says) is like a program my brother was in. Still comes down to... you get out of something what you put into it. My brother is doing just enough to stay out of jail and off drugs but he has a long way to go in his recovery. He does just enough to get by.
If a person works any program to the fullest, I would say that is when they will gain the most. His choice of what he gains from any program.