Lexicos never posted anything again.
But one effect now 9 years later is that if you begin to type @lexi in a post the forum software autosuggests Lexicos before Lexikos. Which likely increases the number of cases where people intend to tag in Lexikos but fail.
Some alterations to the forum could change that.
If Lexikos dislikes the effect then username Lexicos could be removed or renamed or perhaps turned into an alias for Lexikos. To go even further the forum could block creating new lexi-prefixed usernames.
On the other hand Lexikos already gets tagged a lot and might not want more of that. And spelling or selecting the correct username could be a useful filter for attentionworthiness. So he might like the effect! In that case it could be ramped up by creating more lexi-prefixed usernames - lexicois, lexikus, lexicouscous and what not - that anyone intending to tag Lexikos then must take care to not get tripped up by in the autosuggest list.