Earlier quoted context omitted.
Many functioning, respected and powerful people in society are drug addicts. You will almost certainly know some.
How is that relevant to the naked twerking person at the top of the metro stairwell? If everyone on the entire planet was addicted to meth and did it daily, but there was a single meth user who decided to twerk naked at the top of the metro stairwell and assault people, that one person should be imprisoned. Why you ask? Because every other person on the planet is (as you say) functional. Nobody cares if you decided t…
The aforementioned "functioning, respected and powerful people" are able to conceal or internalize the cost of their problems and aren't usually a problem for the public at large.
With that in mind, the problem is really just being persistently a public danger/nuisance. The only relevance of addiction to this is that addicts are frequently unresponsive to incentives that would be sufficient for non-addicts.