Many people who have changed something have been called crazy.
Jung has been deeply involved with human consciousness. He has never claimed that the stories in mythologies and religions are true, he has explored the connection between the human mind and fantasy and consciousness and presented himself with the Red Book as the best example. It can be said that the Red Book is a life study he made of himself.
In the second part I wrote something about his Red Book and there are really good insights how this man thought and how he saw things, how he tried to change them and how he could do it. If the Red Book were really such a bollocks, it wouldn't be so popular with so many psychologists today and it wouldn't be treated at universities.
And if Jung's work were really bullshit, as some people say, then there probably wouldn't be analytical psychology as we know it today.