How? I feel like I'm being trolled. None of it makes sense. There's an unexplained great flood, unexplained human ruins, weird whale-like creatures, some kind of being sucked up into heaven thing that happens to the stork-like bird. I've seen people online trying to put it into a sensible plot but it's so heavy on made up symbolism that to me it's bullshit.
> There's an unexplained great flood, unexplained human ruins
And that's the point. Perhaps you didn't like the movie because you are used to movies that every single detail needs to have a meaning and you were expecting that everything would be eventually explained. In this movie, things just happen and its story is not about them, but about how the characters react to them. Just like real life.
Specially for animals like the main characters. From a perspective of a pet, it's unexplained why its owners leave and return to their homes everyday at the same time; it's also unexplained why they can't pee everywhere. But they can manage to follow their lives and adapt to those unexplained facts without needing to understanding them.
And for me, this is what makes this movie great. It puts me in that perspective of an animal in a human world, where nothing really seems to make sense and it's pointless to try to find a meaning. And that's the opposite of <insert here any mainstream movie with animals as main characters> where we try to give a human perspective of what happens in their lives.
I haven't seen the movie, but based solely on your comment, it reminds me of how Miyazaki films are often described—full of fantastical, otherworldly wonders that evoke the joy of exploring the unknown.
I assume people found it refreshing that for one there’s an animated picture that doesn’t just pour down your throat the same story rehashed for the 1000-th time, and spelled out by a committee to ensure it’s “easy to understand”.
That's the whole point. That it's not explained and you are left with tantalizing questions. It's ok to not like it. Not everyone likes the same things.
Your brain is just on one end of a spectrum that doesn't really respond to the same things as some other people's brains. There are plenty of people who are moved by things that have nothing to do with plot, and would never say something like "made up symbolism". Images, sounds, and symbols evoke mental connections and feelings in many people. A painting has no plot, an abstract painting is made up symbols. Many people find incredible depth and beauty in these things. Some people find that David Lynch's work is the most impressive tapping of human dream like subconscious ever achieved, and others absolutely do not understand it at all.
Why do you expect everyone to come away with the same message? Watching it, I thought about friendship, growth, climate change, death. Other people will see something else in it.