You’re right that there’s no clean line between human and machine help. But that doesn’t kill the law — it just means we need honest thresholds, like we already have for "organic" food or "recycled" content. The practical consequence of doing nothing is worse: massive AI disinformation on climate, vaccines, and elections, all disguised as neighborly human voice. We label what matters, with clear rules, so people can tell if a piece is essentially machine-made. Perfect precision isn't the goal; protecting public trust is.