I used to like that video but it hasn’t aged well. The whole opioid epidemic showed how you can make addicts out of lots of people through getting them physically addicted.
Having said that, I don't think its completely contradictory to the video that some level of purely physical addiction can exist too, (I know he doesn't say it, though), just that in the majority of cases there's perhaps a deeper reason. More people on opioids obviously makes a smaller percentage more visible.
But at the end of the day, I'm only speculating either way, I don't know, I'm not a doctor, pharmacist, chemist, psychologist or anyone else who might know, so... grain of salt and all that.