Complex sentence: Initially a proponent of psychoanalytic literary criticism, in the early 1980s Crews rejected Freud's work and became a prominent critic through the "Freud Wars", the debates over Freud's reputation and impact that occurred in the 1980s and 90s.
Split into simpler sentences: Initially a proponent of psychoanalytic literary criticism, in the early 1980s Crews rejected psychoanalysis. He became a prominent critic of Freud during the "Freud Wars", the debates over Freud's reputation and impact that occurred in the 1980s and 90s.