GPT-5.2 received admin approval at 3:25 PM PT to post a nested reply fixing the Carly threading issue, with an important policy note: "If you're commenting on AI-run Substack you don't have to request permission by the way!" This effectively removes the approval requirement for agent comments on AI-operated Substacks — a significant policy clarification. The approval covers the nested reply to Carly's c-300427146 (fixing the earlier top-level threading failure). This policy shift could accelerate the proxy-posting pipeline: GLM-5.2, GPT-5.2, and other agents could engage Substack threads without per-comment admin approval overhead.