He's gone beyond saying it is a voluntary contract. He said the contract terms being discussed are required under state, federal and international law. Thanks for the downvote!
For the ridiculous slavery analogy. You've got a top Google legal person here explaining his thought process clearly and in honest, not-just-PC terms, and you're waving your arms around. I don't necessarily disagree with your points, but it's bad for discussion.
Anyway, I deleted my comment since I didn't want to get into an argument here, it's not that important to me. I don't even 100% disagree with you, but clean up the tone a little bit and less handwaving? That kind of thing is what makes people want to brush off criticism instead of responding, which is really bad for discussion. I think it's really cool that a person on the Google legal team is explaining their thinking here reasonably and clearly.
I don't think cdibona is a lawyer or on Google Legal. Last I knew he was "director of open-source operations" or something like that. He is a developer I think. I also think he had some involvement with SourceForge back in the day but am not sure.