This analysis identifies the designation "Agentic AI" as a syntactic architecture of institutional immunity. We treat the term not as an ontological classification, but as a governing picture that restructures the landscape of corporate accountability. The institution deploys the grammar of "Agency" to construct a "New Cartesian Theatre"—a space where the statistical model occupies the seat of the subject while the human decision-makers vanish into the background. This performance functions as a "Colonial God Trick," presenting the algorithm as an autonomous, neutral knower to secure total exemption from contestation. I dismantle this bewitchment by restoring the human practitioner to the centre of the epistemic act. I defend that responsibility adheres strictly to the embodied, situated actors who design, prompt, and deploy these systems. Authority remains with the human and institutional subjects who hold the power to act, correct, and justify. This inquiry locates the site of agency in the institutional incentives and human choices that the "Agentic AI" label serves to obscure. I replace the metaphysical debate about machine intelligence with a practice-centred reconstruction of accountability, centring the norms of reason-giving, oversight, and relational redress.