If it's sufficiently low dose and it's tracked at a level that can detect and alert about potential abuse, that makes a lot of sense to me; thank you for the (much better) explanation.
Basically like lots of things in Australia we are getting caught up in the US hysteria about opioid addiction.
Yes opioids are powerful and potentially dangerous drugs, but used wisely they are very useful and effective. If there is a problem then the solution is to solve the problem, not just ban everything because there might be a problem.
On the topic of the US opioid addiction the way it has been handled is appalling. Getting millions hooked on powerful prescription opioids and then cutting them off cold turkey with effectively zero help so they end turning to really dangerous drugs like fentanyl is criminal.