It's an interesting argument, not unlike the everlasting debate about the portrayal of the 3D world in 2D in paintings and other artworks. Why do humans need to do that? Who knows. Why do (some) humans like outlines? Who knows.

Amontillado wrote:

Outlining is writing in shorthand. It's not dimensionally limited unless
the writer is. An outline is a map, not a prison. Dammit, Jim, I'm a
writer, not a jailer. You can't hold me responsible for whither my
characters roam!