Devil's advocate:
It's a movie fundamentally about separating Superman from humanity, showing us how superior and above ordinary people he is, always would have been, and always will be by virtue of his birth. About turning him into an otherworldly messiah, rather than the best of US. Man of Steel doesn't make Superman look like a hero, it makes humanity look like his pets.
Everything good about Superman comes from his humanity, it's a part of you and me as much as it is him. His Kryptonian heritage gives him power, but his upbringing makes him a hero. Man of Steel forgets that. Or rather, has absolutely no interest in it. Hell, it goes out of it's way to actively refute it, repeatedly. All the Kent's give Clark is fear. His instincts are to help people, but Pa Kent not only tells him not to, he commits suicide in order to make sure the boy really gets it. It takes his Kryptonian daddy to bring him out of the shadows. Even his suit is just his alien birthright, complete with an alien symbol that he adopts as his standard.
Even the message of Zod's death is twisted. Physical strength, the ability to dominate your enemy, is the only true virtue. Superman doesn't win because of his morals, because of his dedication, because of he selflessness. He doesn't win because he's righteous, or virtuous. He wins because he's physically more capable than Zod, beats him into submission and then murders him. Might AS right. It's utterly, distressingly authoritarian.