Sometimes the author of the comment is relevant information: if pg says something about VC funding, you know that he has experience in it and also what his bias

Sometimes the author of the comment is relevant information: if pg says something about VC funding, you know that he has experience in it and also what his biases might be. If someone anonymously says something about VC funding, you have no idea what their experience or biases might be. Also, it is useful to know whether the person who replied to your comment is the same person who wrote the comment yours was a reply to.