I don't think that specific conversation was being referred to, but the general pattern of Eliezer's willingness to ban people that are consistently downmodded in conversations.

What I have always found weird was him actually threatening to delete all future comments from an account rather than actually banning the account. Freedom with message deletion actually makes me more nervous than a free hand with the /kick command. It seems more transparent.

My broader point was that by using the appropriate language to admit wrongness and irrationality and uncertainty, it should be permissible to be almost arbitrarily irrational here, at least until someone tells you to go read the sequences before commenting again.

Humility and basic courtesy do go a long way, don't they?