“It’s not about the person failing the treatment, but about the treatment failing the person.”
I think I would agree with that statement as is, but not the conclusion that another drug (heroin) should be added to the arsenal of treatment.  
It's obvious that these people's problems are not going to be solved by a stronger opioid. 
But if you're going to do it, then play the game right: collect your before and after stats and lets see how much money and how many lives we really save.