Not really going to debate mother! as it has little to do with this movie. As for intelligence comparable to humans, what would be acceptable to you? It speaking perfect English and drinking tea on a Sunday morning?
My point was simply that like mother!, this movie takes symbolism and metaphor and embodies it in real people. For me that creates a host of problems that prevents from engaging in and enjoying the story.
This is just crap. The creature learned human sign language in like a week, and got fairly fluent in it. That is beyond anything a dolphin could master. Animals can grasp basic words and commands, but this creature clearly understood emotions and concepts. Did it say them in the form of well spoken English dialogue? No, but it clearly knew what the idea of "love" was and could master full sentences in sign language, thus showing abstract thinking. That's beyond a dolphin.
As I said, the creature doesn't need to speak perfect English, but to engage in a sexual relationship with a human it needs be comparable to our species. The bits of sign language that it spoke were just parroted from what Elisa has already spoken. I wonder if it even understood what it was saying, and not just imitating what it saw without any comprehension. Obviously from del Toro's point of view it understood, but that wouldn't be immediately clear if this were real and one only had the creature's behavior to go on.
There was no sign that the creature came from a sophisticated culture. No tools, no language of its own, no artwork or structures.
The only reason why any of this matters is because Elisa entered into a sexual relationship with it, and without the foundation of equality it is exploitation, pure and simple. You can say it was operating at a level of sentience that's different than us, but that wouldn't change the fact that he and Elisa were not equals and that their union was fundamentally unbalanced. One could make the argument that Elisa entered into it out of desperation, but that still wouldn't make her actions morally right, they'd just be understandable. Besides, a lot of critics I've seen seem to think that Elisa was not broken and a fully functioning human being, so if that's the case that makes her actions even more inexcusable.
We don't necessarily have to judge her actions, but the movie is trying to make their joining as some deeply romantic love story which to me is delusional.
Plenty of GDT's work are fairy tales for adults. But, that is not a bad thing nor devalues his work. He tells a more effective love story with a non-human fish monster than 95% of the film's I see with the young attractive man meeting young attractive woman. This movie had layers and a message, and yes making the monster less human adds a dimension I don't think you're considering.
Sure, fairy tales for adults might not inherently be a bad thing, but I personally don't enjoy them. I'm not a big fan of del Toro's work in general. I dislike all of his English language films (and actually think most of them are quite poor). I love Pan's Labyrinth, which is also a fairy tale, but it's handled with much more subtlety, nuance and maturity.
And so what if most movies are crap. What does that have to do with anything? This film's message was hamfisted and about as subtle as an after school special.