I'm the author, and no, this was not in response to that post. However I don't see them mutually exclusive.

I'm fine with Github being someone's resume, and in fact the less concern you have over other peoples' opinions of your code, the better code you'll actually write. It's like anything, practice makes "better" (not perfect) :)

I think code is a qualifier for evaluating a candidate, but that's not the main indicator. In fact, I suspect someone won't go very far if all they do is plagiarize other peoples' well written code.

I could be wrong though, I just don't have the balls to pull it off.