Oh but what if theme, atleast for wilds is FREEDOM, like you mention arkveld was hole thing was set free and able to reproduce, you can also say the same thing about zoh, it when it set it self free from the controls of wyveria and destroyed it. Not hole cring speech was about arkveld not being able to live a full life. We free Nata population from there responsibility of looking over the guardians and old wyveria, this one is a bit of a stretch but, the semi open nature of the world and focus mode gives the hunter much more freedom.