It was bound to happen
Well it was only a matter of time before Emo spilled into the world of animation, it's already clamed the souls of photography, poetry, and video, not to mention music.
Although hidden well in a very simple deisng the motion tweening was shoddy and the frame by frame work was, although not bad, hardly used and thus didn't improve the style imo.
The fear of butterflys had no real connection to the cartoon itss elf that also confused me, although it might have some "deeper meaning byond what my mortal mind can understand" or something, god knows.
The sound, as you said was lacking, but I wont go into that as you already know it is.
All in all it felt like it was trying to be a dark cartoon but ended up just being an emotionless, and quite dull cartoon with its lacking animation abilities hidden behind a pale style.