As you describe it, they're not giving those rights to the key— instead they'd be acknowledging that the anonymous person using that key already has those rights.
Signatures don't generate themselves any more than guns fire themselves. You can't have a key and a signature without a human somewhere responsible for generating it, and that human is entitled to the right of publishing, even anonymously.
The Supreme Court (in the US, anyway) has found that prohibiting anonymous publishing abridges the basic freedom of speech.
Signatures don't generate themselves any more than guns fire themselves. You can't have a key and a signature without a human somewhere responsible for generating it, and that human is entitled to the right of publishing, even anonymously.
The Supreme Court (in the US, anyway) has found that prohibiting anonymous publishing abridges the basic freedom of speech.