In the sprit of Is there anything in Freudian psychoanalytic theory that is scientifically sound? I want to ask the same question about the works of Carl Jung, because I know even less about them. Wikipedia has a short paragraph about his legacy, which is mostly about how cited he was (and that does not, alas, entail much how correct his ideas ultimately were), which mentions MBTI as a concrete offshoot of Jung's ideas. I know MBTI was mostly superseded as personality theory. In an blog discussing the latter matter, John A. Johnson (prof of psychology at Penn State) says of the wider Jungian works
Jung's scientifically dubious ideas about archetypes, alchemy, synchronicity, the collective unconscious, the paranormal, and so forth are irrelevant to his theory of psychological types. Jung's theory of types gave us the concepts of introversion and extraversion, which modern, scientific personality psychologists are perfectly happy to use today.
Does this mostly summarize Jung's legacy? I know there have been entire books on his works like The Handbook of Jungian Psychology, but I don't want to read all that to come to a conclusion. Also it seems that book has a single review in the Journal of Analytical Psychology, which looks like an in-house thing; nevertheless the review (by psychoanalyst Joseph Reppen) says:
Although psychology is one of the most popular American majors, Freud, Jung, and depth psychology are rarely present or are marginalized in introductory psychology texts. As one colleague remarked to me, if Freud gets a page, Jung gets a paragraph. And that paragraph probably includes a short comment about extrovert-introvert–case closed.
Which kinda mirrors what Johnson wrote, but with a bitter tone. The rest of the review is book-oriented, but Reppen seems to me to fail to make a clear case what else is important, legacy-wise in Jung's work. So, are there other reasonably concise takes on Jung's scientific legacy? And do they agree or disagree with Johnson's take on that?