You're missing the link at the bottom of this page.

Seriously, root exists from the minute you install Everything, so accordingly root would exist even before vroom.

Also, I would conclude that this means that vroom probably was engaged in some testing before perlmonks was live on the web. So, a corollary to my guess is that the user table was cleared out before the site became live. Why did that post survive? That's a question for Fearless Leader.

ALL HAIL BRAK!!!