That you have to blame on the writer, he became Superman after discovering the drone ship and upon it's discovery the signal was sent that drew Zod to earth. Other than learning how to fly he wasn't given the oppertunity of a first day like in the first Donner movie. But then given the reaction to him in general maybe that was a good thing, since his very appearance set off the paranoria Jonathan Kent thought would happen.
I do blame the writer as well as the director for approving it. In a weird way by having Superman trigger the signal that lead Zod to earth, Supes is actually partially responsible for all the destruction that went on.