I see your question, and I choose to raise:
Is visual "art" an art or a science?
Yeah, sure, it's in the "name" and everything - but what about all the technical aspects of making an appealing visual? Composition, lighting, perspective, anatomy, repetition, juxtaposition, contrast, etc? What about learning techniques for using a specific medium - oil paints, ink, acrylic, watercolor, charcoal, digital - and knowing what kind of paper to use, or how to hold your materials? What about being aware of art genres - I mean movements - like surrealism, pointillism, impressionism, realism, hyperrealism, etc?
You seem to be drawing this line of "you need technical knowledge to write well, so that makes it a science" - but you need technical knowledge to draw well, too. It doesn't have to be conscious "I learned this through applied academic study" knowledge, but it still needs to be learned in some way - most often by doing and observing others.
But efficiency in showing emotion in writing? Do you know people? They feel differently, sure there are generalities in the ways people feel, but are you really gonna say that all people like the same linguistics? There are a million dialects and billions of people. I wrote a story for one person with an artistic view, not scientific.
By this standard of "if this doesn't elicit an emotional response in every single person who sees it, it's not art", visual art also does not qualify as an "art". No matter the form, art is subjective - people don't like the same art styles, or the same art movements. They have visual art pieces that meet every box that they usually love that don't do anything for them emotionally, and pieces that don't meet any of their usual criteria for "good art" that make them feel on a deeply personal level.
The amount of people in my mind a piece needs to elicit an emotional response from to qualify as art is one, and that quota should almost always be filled by the person making the art. And part of the art is, in fact, trying to figure out how to express human emotions and abstract concepts in a way that connects to other humans.
You can learn all the technical aspects of creating visual art and make technically correct "masterpieces" with no soul that might get praise at first but have no staying power beyond their first appearance. You see this in writing too - books where the author was clearly more focused on writing a story that hits all the expected beats and tropes of the genre they're writing than actually having something to say for themself. They pop up, everyone talks about them for a few months, and then you never hear about them again.
Art is a way to express personal truth. Learning how to express that truth in a way that connects with other people is an artform of its own.