In the announcement thread for self-moderated feature, theymos wrote

He has several accounts all banned for ban evasion. It seems that the underlying offense which caused him to initially get into trouble (and often the thing which causes his alts to get noticed) is excessive multi-posting. But when he was warned and/or temporarily banned for this minor thing, he kept evading his bans. This forum cannot operate unless its few rules are followed, so ignoring the warnings and temporary bans that you receive and continuing to do the same stuff is unacceptable. People who do so are not welcome here.

His bans will not automatically expire, and any future alts we see from him will be permabanned. I may manually reconsider his ban if he promises to actually try not to break forum rules. The rules are not meant to silence anyone, but to keep the forum usable and fair. When someone multi-posts excessively, it monopolizes a thread in a way which harms everyone else's ability to communicate. Based on his posts in this thread, I think that he will just continue to break rules if unbanned, so I will not unban him at this time.