Everyone is doing it, why should we?

The question I have is regarding a quotation from "Criticism, Inc." by John Crowe Ransom. He quotes a "head of English studies in graduate school" as saying, "This is a place for exact scholarship, and you want to do criticism. Well, we don't do criticism here, because that is something which anybody can do." Do you think the fact that anyone can do criticism makes it less important or worthwhile? Why is it important that we have literary criticism and learn how to do it correctly?

Image found at: https://www.abc123start.com/wp-content/uploads/2017/02/anyone-can-do-this.png.