Since I am the only person on HN who does this (my meme has not taken root), I'm not going to take your concern about my idiosyncrasies contributing to the insularity of HN too seriously.
This isn't clear from your comment, but: you do understand that I said Twitter users' use of @user is annoying and offputting to outsiders, not an example to follow?
That said, this isn't a big issue for me; feel free to ignore this comment!