Not just 'another member of HN', the most high-rated, the most prolific member of HN who is very often found shaping the direction of discussions here and is now a considerable voice in the security community. He's also someone that new tech startup founders listen to when deciding what to use and what not to use.
I know who tptacek is, I've read some of his papers, I've applied to the crypto challenges, I've disagreed with him in the past about the importance of BSAFE to the industry. It still comes across as petty to launch into a meta discussion of who's right and who's wrong on HN when there's much more interesting topics to consider based on this article's revelations.