The simple fact that these trucks and their owners don't give a damn about western countries is enough to counter any arguments. They're made the way they are to carry as much load as possible, and the decorations hold a sentimental value to the owners. Many of these owners own a maximum of 2 to 3 trucks and their livelihood depends on it. Considering that the profession runs in the family, it's not difficult to attach sentimental value to these vehicles.