The start of the DC Extended Universe is a movie that is controversial and fraught and polarizing, as Zack Snyder turns Superman into a supporting character who is barely heroic. The great superhero movie rewatch actually gets angry at one point at Man of Steel.
Snyder et al make the same mistake with this movie that Ang Lee made with Hulk in 2003: making it more a story about the main character’s father than about the main character. The title character’s journey is cut off at the knees by wasting the early part of the movie on Daddy and waiting for the son to catch up to where the viewer already is. This would’ve worked much better starting with Kent on the boat and doing the flashbacks to his childhood, and then presenting the Krypton part when Jor-El tells Kal-El about it.