Peter:
Option 1 is to cooperate, so I guess option 2 is defect. The correct way to defect is to destroy Huygens.

But this is the inverse of how cooperate/defect was framed earlier in the story. When humans had the upper hand, defecting was to blow up the baby eater ship, and proceed to fix the babyeaters in some way. Cooperating was to stay peaceful and manage some mutual compromise. For some reason the humans are pretending that the superhappies haven't defected.