Complex sentence: He maintained that Marcuse misinterpreted Freud's views on the process of sublimation, though he considered this inevitable given Marcuse's purposes, and noted that aspects of Marcuse's "erotic utopia" seem regressive or infantile, as they involved instinctual gratification for its own sake.
Split into simpler sentences: He maintained that Marcuse misinterpreted Freud's views on the process of sublimation, though he considered this inevitable given Marcuse's purposes. He also noted that aspects of Marcuse's "erotic utopia" seem regressive or infantile, as they involved instinctual gratification for its own sake.