I tend to agree. Not all storytelling, especially ones that are character driven need to handhold and/or tie up plots neatly. This practice is used much more in Western films and storytelling than in Asia. Granted not all foreign stories are created to make you think or inspire, but many are not straightforward as Western audiences are accustomed to. In fact many animes and films in general leave the viewer wondering what happens/possibilities, not everything is resolved neatly. Also this is a very Japanese practice in storytelling, one of the best mangakas Takahashi Rumiko is an excellent example. Her classic and well loved works ranging from Urusei Yatsura, Ranma, One Pound Gospel, Mermaid Saga/Forest etc, all do not neatly close the series and/or the character interactions. The Urusei Yatsura films in particular are excellent examples of this form of storytelling and I would dare say, UY set many standards for many anime practices even to this day.