As Ortiz puts it,
“Language is more than just a functional mechanism.”
Writing isn’t simply a way to convey facts because different people will argue about what constitutes a “fact”. Writers are basing their writing on their own perceptions. I might write a piece on chameleon biology, focusing on current scientific knowledge and anatomy. Moore’s “To a Chameleon” is no less factual—she is just as accurate in her descriptions. Without a background in science, she clearly describes the lizard, its habitat, and how it feeds. We’re writing about the same animal based on our individual perceptions of the world.