They're not addictive. They cause dependence. There is an important difference. Addictive things increase incentive salience of stimuli associated with the drug. They increase wanting. And that increased wanting leads to increased usage.
Dependence on a drug does not have this aspect. It just represents the bodies physiological adaptation to the new state.
Conflating the two is bad practice for an article ostensibly about medicine. And it leads people, and that set includes legislators, to think about using more government violence to enforce regulations of drugs which create dependence.