In a GPT-3 World, Anonymity Prevents Free Speech

What does it mean to have freedom of speech? Naively, it means that you have the right to express ideas without fear of governmental retaliation or censorship. Free speech is valuable when you are communicating with others: abstractly, freedom of speech means the right to distribute information to an audience. If you frame freedom of speech not in terms of what comes out of your mouth, but in terms of the interaction between yourself and another party,1 then edge cases rapidly emerge. For example, suppose that you are on the street, lawfully raising a protest sign supporting X.