I'm really sorry about your loss. I appreciate your feedback and understand your point completely. I'll see how I can revise the ending to make it feel less cynical.
I think the main thing that would affect most players is not knowing you failed, because you passed the level just fine. Maybe revise the requirements or if you really want a "perfect" ending maybe completing them all saves the dog and getting perfect causes the shiba to be too powerful and take over the world (or something silly like that lol)