Yes, it is commonly argued that Jacques Lacan's work in the 1970s can be seen as a shift away from structuralism and towards post-structuralism.
In the early part of his career, Lacan was heavily influenced by structuralism, particularly the work of linguist Ferdinand de Saussure. Lacan used Saussure's ideas to develop his own theories about the structure of the psyche, which he saw as composed of a series of signifiers that could be analyzed and interpreted.
However, in the 1970s, Lacan's work began to shift in important ways. He began to focus more on the idea of the "subject," and how it is constructed through language and discourse. He also began to explore the relationship between language, power, and ideology, which are key concerns of post-structuralist thought.
Lacan's later work also became more critical of the idea of a unified, stable self, which is a key assumption of structuralism. Instead, he emphasized the fragmented and unstable nature of subjectivity, and the ways in which language and social structures shape our sense of self.
Overall, while Lacan's work cannot be neatly categorized as either structuralist or post-structuralist, his later work in the 1970s does demonstrate a significant shift towards post-structuralist concerns and ideas.
