Yeah I noticed that while refreshing because the same one came up again. Seems to go against the whole spirit of the “doesn’t exist” theme if it’s not auto generated IMO.
The ones that show when you first load are indeed pre-generated[0], but you can 'Try your own' which does generate a new AI from your name prompt, although when I tried I was getting gateway timeouts likely from the extreme HN-attributed load.
0: https://news.ycombinator.com/item?id=31138272