A debate I've had a few times. In no way am I taking about a specific person or group not my partner etc etc it's more curiosity.
People over the years who are quite liberal about substance use have told me there are loads of functioning addicts and it's perfectly possible. This is usually followed by stuff about the societal view of alcohol use being v tolerant as opposed to the societal view of opiates for example.
I expect there is extensive data around problematic use due to needing medical care etc and various services but is that one end of the spectrum? I have no idea. And I imagine far less data about recreational use.
V interested to read others opinions/facts etc. very much a journal paper person and going down a study rabbit hole too.