The problem is you can’t make a digital label that hard to circumvent. Much like a signature, you sign something you want to prove it is genuinely from you, but you won’t sign something that’s not from you while not signing things that are, especially in digital format. Digital signature can just be stripped out of the data. Watermarks on images can now patched with the help of inpainting models. Disclaimers in text can just be deleted. The default shouldn’t be “This thing doesn’t have an AI label so it would be written by human.” The label itself it a slippery slope that helps misinformation spread faster and aid building alternate facts. Adding a label won’t help people identify contents generated with ML models, but let them defer the identification to that mere label because it said so, or didn’t.