So I will spoil it for you: It is not a Zootopia metaphor. If you think it is trying to be that, you'll hate it! It is a KLK metaphor: It's about Japan's past, present and future. That is why the main characters are specifically mythical beings(tanuki, kitsune, okami) and why there is a plot spanning human/beastman dynamics, corruption, cults, and immortality: it's alluding to various aspects of Japan's past that it has forgotten or chose to hide in the present, which new generations can rediscover and be empowered by.
And I will admit that it's pretty inaccessible because the show allows no time for an entry point beyond that. It's a big metaphor with a lot of facets to explore, so it has to rush its characters through each scenario. And it does not try to present a complex answer to its themes, either, because like a lot of Trigger shows, it's a fairy tale where cool, highly exaggerated things happen because you want to believe they could happen. So if you don't know what you're supposed to believe in, it's going to miss and feel unearned. The "10" rating is because when taken in context, they pulled it off, and I really can't fault the writing - there are a lot of satisfying, well-animated moments packed into each episode, but the viewing needs to be spread out to appreciate it.
