Yeah, again I just don't see it.They over-motivated his character, but that doesn't ad any dpth.
His "motivations" were just progressions of a single, simple theme. Worked for me.
But since Zod's motivations are so plot-dependant, and the plot is stupid (I mean, they had ships, they had colonies, and they had terraforming things, but no one wanted to escape Krypton? Really?)
What's the problem with this? Who would really commit to haring off to space if they could convince themselves -- as Krypton's Council had -- that there was nothing really wrong with their home planet? (Also note that aside from the parallels to climate change denialism, the withering of Kryptonian space travel alluded to in the film has other parallels in our real history -- in this case of space travel, to the withering of NASA, and in the case of Krypton's voluntary self-isolation to preserve stability, various "hermit kingdoms" of Earth history.)