I often look at the debris in the ditches as I ride. On the way out of town, they are full of empty beer and booze containers. On the way in, they have either general garbage, likely from a dump run gone awry, or tobacco product wrapping.
Since we have no traffic law enforcement, and barely any law enforcement patrols of any sort, there is no risk of being pulled over and cited for open container violations. Thus, I don't think the alcohol containers on the roadside have anything to do with that law. I think we're just talking about narcissistic drug abusers and their dirty habits. Too many of them appear to be youngsters, which is sad.