Imagine if there were a moral counter in the game. 

Like let say you really DONT have to kill the aphids and caterpillars. Could keep eating disgusting mushrooms until you find better ways to cook. 

Then the story ending changes depends on how "evil" you were. 

I can say I would not be a good player 

I do feel kinda bad when I kill an aphid loool they are so damn cute I want them as pets. OOH PETS?! OBSIDIAN?! PETS?!

The moral choices wouldn't come from harmless bugs, after all at that height its kill or be killed, survival of the fittest, the morality would come from how you deal with the Stranger and maybe bug Queens/Kings and Bosses