I'm not really sure what's the point of destroying the cities so brutally, they want to send a message? Right now because is all centered in one location (more like one or two states) is not that crazy but say they do the same in a global scale, then what's next? Only robots left?
The destruction is so heavy that there's not much left for all the other subplots like sweet mask, everyone was shocked that he was a monster, but if the destruction continues like this, there will be no one left to really care.