Earlier quoted context omitted.
The constitution grants no rights to robots, and they have no freedom of speech, so no amendment is necessary.
The constitution grants no rights to books, and they have no freedom of speech, so no amendment is necessary.
Books are not granted freedom of speech, authors are. Their method is books. This is like saying sound waves are not granted freedom of speech.
Unless you're suggesting there's a man sat behind every ChatGPT chat your analogy is nonsense.