Wow thats a big assumption that the system the user is circumnavigating is legitimate. Their are 2 "official" reasons for that system, safety and patent protection. While both have their merits they don't legitimatize the current state of that system. By your definition the only difference in its status of legality is the location those drugs are purchased and used. This is a very flaky foundation for your argument of legitimacy and the outcome of theft. Most of the time any legitimate protest against what you believe is wrong elicits shouts of "theft", "illegitimate", "think of the children", "safety". This conversation would be much more productive if you provided any examples of that theft or support for why the system is legitimate to begin with.
That being said I do think the system has a place but it desperately needs overhauled and people seeking alternatives to the system aren't the problem but the canary in the coal mine signalling the weakest of our fellow citizens can't make do with the system that should be serving them.