Yes, apparently it is his son and that might explain why he is the way he is.
Here is a picture of his from the Death of Superman comics
I knew they were going for the whole Death of Superman scene and it made even more sense why Lois was in the middle of battle also
but yea, I agree, it wasn't great, but it is definitely not as terrible as critics say. I agree with you, a lot of the scenes were rushed and a lot of people say that the movie was too long and that it didn't need all these parts. But the 'extra' they were talking about sets up for later movies and it also has a ton of cool references to comics.
I saw Frank Millers batman inspiration, injustice: gods among us, and the death of superman in this film. A little bit from crisis on infinite earths/flashpoint, but we'll have to wait and see on that one.