I wish Arrington didn't try to make himself the story so much - I know it's his schtick but it's very distracting from the actual story here.
He's obviously on HN regularly - if he had a problem with the way he was characterized in a HN comment the easiest way to respond to that is right there. Anyone reading pg's comment would see his rebuttal, pg would see it, and people could directlly make up their own minds.
Instead he makes a "oh god look at this liar" TC post because he enjoys using his bully pulpit to shape public opinion. No wonder he lets people like MG call out random CSR lies on twitter and get them fired at AT&T.