But in this current case, the speaker's political background fits the interpretation perfectly, so I don't think that we need to explain it away.
Put another way, if he was a HN member he was definitely be banned.
Yes, that's exactly your problem. You built an image in your mind, and you interpret according to that image. If you built your image the same way you interpret this reply, well...
> was definitely be banned
HN banhammer has its own biases.