That commenter's behavior was egregious and we've banned them, but we also need you to avoid escalating flamewars. We'd appreciate you taking a moment to read the guidelines and making an effort to observe them in future.
We've banned this account for abusing other community members and ignoring our appeals to stop. If you want to not be banned, you can contact us at hn@ycombinator.com and demonstrate to us that you intend to use HN as intended in future.