Is this point somewhat neglected by academic philosophy? An excerpt from a biography of him sheds more light on Wittgenstein:
Wittgenstein's penchant for active philosophizing also helps to account for the fact that he was not very well read in the history of philosophy. He once assured a student that 'no assistant lecturer in philosophy in the country had read fewer books on philosophy than he had.'10 He read a great deal of Plato, but no Aristotle at all! Most of his favorite authors were suggestive and moral, rather than rigorous and logical, in their writings; in addition to Kierkegaard, Saint Augustine, Dostoevsky, and Tolstoy are often mentioned. It was Tolstoy's abridgement of the Gospels that he discovered during the First World War, and carried with him. He read George Fox with approbation. Schopenhauer's World as Will and Idea was one of his earliest philosophical readings. He read, and was excited by, William James's Varieties of Religious Experience as early as 1912. He believed that it caused a moral improvement in him.11
The paucity of Wittgenstein's philosophical reading was a  conscious decision ... Another reason why Wittgenstein read little philosophy was that he disdained academia-for-its-own-sake. 'Professorial philosophy by philosophy professors,' or non-genuine philosophizing, was one of Wittgenstein's greatest dislikes.12 He often tried to discourage his best students from becoming professors. Several of them report that he seems to have been afraid they would cheat their students - and themselves - by offering a course in philosophy. (He seemed to believe that no one could deliver what 'philosophy' promises.13) He suggested that instead they should do useful work. This fits, not only with his remarks on 'philosophy' in general, but with his expressions of his own inadequacy as a teacher. He was sure that his teaching had done more harm than good to his students. He twice left the academic scene because he felt he had nothing more to contribute, and there is evidence that he had considered leaving more often.
It seems that academic philosophy often forgets the primary purpose of philosophy: to guide one's thoughts, decisions, and actions. Metaphysics, epistemology, and logic are simply tools toward discovering how best to act in the real world.