I believe that whoever provided the post-apocalyptic details for GiTS as well as the 2 seasons of the TV show has demonstrated an uncanny ability to depict those situations in a convincing manner.
I don’t think it was entirely Masamune Shirow despite the disturbingly accurate geopolitical situation depicted in both seasons of GiTS:Standalone Complex.
There are some traditional post-apocalyptic Japanese memes in that movie and series that are coming to fruition.
What struck me was the map of North America and the American Empire
Very interesting take, to say the least.