Hindsight is 20/20, the future is uncertain. He was 15 yo when he got the transplant, it's fair to think he would turn his life around with a second chance, many young people do.
Let's step back to two years ago, the boy did not qualify for a heart transplant because he failed every single one of his drug screenings. You have to be clean in order to get a organ transplant.
The "civil rights activists" framed this that he was being denied a heart due to his low grades and being in trouble with the law. The medical committee stated very clearly however that they do not consider grades or criminal record in their decisions for organ transplants only medical information.
Unfortunately pressure from the "civil rights activists" forced the medical community to override their medical decision.
The end game was that someone who did not even qualify for a heart (due to his continuing drug abuse) received a heart - which he promptly wasted.