This is an odd question, but for people with chronic and essentially untreatable pains (which is many people, particularly older ones): What is the problem with being addicted to opiates if you are going to take them to manage that pain for the rest of your life anyway? I would want the opiates at that point.
That's not so black and white. They work to some extent as long as dosages don't keep escalating and use is intermittent. Even the link you posted says as much.
I don't understand why "give people with chronic pain rapid access to specialist pain management clinics, rather than just dumping them on ever increasing opioids" is a controversial statement.
I know a chronic pain sufferer and according to her opioids are of short term help but make everything worse in the long run. Unfortunately there are not many ways to treat chronic pain.
For long term pain opioids don't treat the pain, and they risk addiction.
That's why we have things like "Opioids Aware": http://www.fpm.ac.uk/faculty-of-pain-medicine/opioids-aware