Generally speaking people don't get banned here, also they have ~75,000 internet points so they know what they're doing.

Either this thread will get flagged to death because ultimately this is a VC forum or dang will come in and dish some well deserved scoldings if anyone goes too far but that's about it.

I think HN automatically imposes a limit on how much furthur down a comment chain an existing participant can comment in, to prevent heated discussions. So while I, somebody who hasn't commented till now, can reply to the reply to your comment just fine, you, somebody who has commented previously, cannot.

Hope that clears it up, I don't think your account is shadow banned.