I didn't really understand your question.
An opinion most suitable to answer the question:
It might or may be early in the story and the author may not want the reader to form an opinion yet or perhaps the author is describing a minor detail and does not want to draw extra attention to it that could detract from something more important happening in the story.
Answer:
First: the graphic novel is not a glorified comic book
Second: the graphic novel has its own conversations and stylistic attributes
Third: the description of a setting and action is unnecessary in a graphic novel.
Fourth: Inner monologues are also part of a graphic novel.
Fifth: Visual descriptions in a graphic novel affect the atmosphere.
Answer: you forgot the attachment
