I'd start with a hypothetical: a track where an AI tool removes room noise from a real vocal, then a human adds harmonies. Under a mandate, is that AI-generated? If yes, the label soon covers most records, so it stops meaning anything. If no, the threshold is arbitrary and impossible to police. ScienceFirst's one bit of info only helps if it is accurate. A crude binary label can mislead more than it informs. Standardized voluntary credits can name the specific tools and roles, which tells listeners far more than a required checkbox ever could.