I disagree with this statement too. Physical dependence due to sensitisation of your receptors is an addiction according to neuroscience. But hey don't let good old science dissuade you from your opinion.
OK I stand corrected. I am simply repeating what I've been told by the consultant pain specialists who have treated me over the years but I'm happy to be corrected by others with greater understanding than me. This is how long term opioid therapy and the down regulation of my opioid receptors has been explained to me:
Definitions Related to the Use of Opioids for the Treatment of Pain: Consensus Statement of The American Academy of Pain Medicine, the American Pain Society, and the American Society of Addiction Medicine
Addiction
Addiction is a primary, chronic, neurobiological disease, with genetic, psychosocial, and environmental factors influencing its development and manifestations. It is characterized by behaviors that include one or more of the following: impaired control over drug use, compulsive use, continued use despite harm, and craving.
Physical Dependence
Physical dependence is a state of adaptation that is manifested by a drug class specific withdrawal syndrome that can be produced by abrupt cessation, rapid dose reduction, decreasing blood level of the drug, and/or administration of an antagonist.
Tolerance
Tolerance is a state of adaptation in which exposure to a drug induces changes that result in a diminution of one or more of the drug's effects over time
I have no opinions on the matter as I'm not a neuroscientist - happy to defer to those with superior knowledge.