No, I think he is raising what he genuinely believes to be a very valid question and a timely issue for journalists - if your big career break comes as a result of an association with Person X, does Person X deserve to share in your mega-millions resulting from that story? Woodward obviously doesn't think so, but Felt's grandchildren -- who want to pay their college bills would disagree with Woodward.
Felt wanted to destroy Nixon's presidency and he used Woodward and Bernstein to do it. Felt got what he wanted from Woodward and Bernstein. Woodward promised to never reveal Felt's identity. He kept his promise. I do not think he owes Felt or his family anything other than common courtesy. It appears to me that he has been courteous to the family.