It's not just that a lot of his theories were wrong (something he had in common with Galileo and Newton), but that his wrong theories were taken far too serious

It's not just that a lot of his theories were wrong (something he had in common with Galileo and Newton), but that his wrong theories were taken far too seriously for far too long by certain sectors of the humanities (cough critical theory cough) as well as writers of film and television whose sole exposure to psychology was Freud in History of Psychology 101.