That's not the explanation; the explanation is what I said above: off-topicness, drama, metaness, troll topics, self-referential rants, and tedious back-and-forths.
What I described is really a 3-month probation rather than a ban, during which your comments will default to [dead] but we'll be happy to vouch for the good ones. Since our software doesn't do probations, we have to use the ban system to do this.
When you use Hacker News as intended—i.e. when you post out of intellectual curiosity—your contributions range from fine to wonderful. But you're doing way more than this. You post many things that come from a very different place than intellectual curiosity. Those posts have a lot of energy, but they're not interesting in HN's sense of interesting. When you do this, you lower the signal/noise ratio here, often very badly. Other users get sucked in for their own reasons, resulting in large, tedious subthreads that nobody else cares about. That's not what this site is for.
Lowering the signal/noise ratio is the reason why we moderate anyone here. It isn't personal. Personally, we admire your cleverness and like you, which is why Scott and I have spent so many hours communicating with you, trying to help you, trying to get you to fix this. Most anyone else would have been banned a long time ago.
I'm sure it's true that we don't know all your accounts. And I'm sure you can create all sorts more trouble for us if you want. But for what reason? Doing that is not going to feel any better.