The reviewer at the bottom of this list had it right. Salad Fingers is great mood. But what does it actually show? The world it portrays is a world of ONLY the Shadow; The Shadow and isolation - nothing more. But this is a purge: it does not show the truth of the world: only Miyazaki does that. Spirited Away does it best.
A world of only shadow appeals only to those who blind themselves to light.
*** I still give this 7 for the mood and for nostalgic reasons. I like it when the red water comes out.
**** I refer to the Shadow as Jung described it; that hidden, darker aspect of the unconscious.