Academic philosophers tend to have a narrow view of what is valuable philosophical work. Hiring, tenure, promotion and prestige depend mainly on one's ability to produce journal articles in a particular theoretical, abstract style, mostly in reaction to a small group of canonical and 20th century figures, for a small readership of specialists. We should broaden our vision.
Consider the historical contingency of the journal article, a late-19th century invention. Even as recently as the middle of the 20th century, leading philosophers in Western Europe and North America did important work in a much broader range of genres: the fictions and difficult-to-classify reflections of Sartre, Camus and Unamuno; Wittgenstein's cryptic fragments; the peace activism and popular writings of Bertrand Russell; John Dewey's work on educational reform.
Popular essays, fictions, aphorisms, dialogues, autobiographical reflections and personal letters have historically played a central role in philosophy. So also have public acts of direct confrontation with the structures of one's society: Socrates' trial and acceptance of the hemlock; Confucius' inspiring personal correctness.
It was really only with the generation hired to teach the baby boomers in the 1960s and '70s that academic philosophers' conception of philosophical work became narrowly focused on the technical journal article.