Yes: the fame is the subtext. It's akin to mononyms; they'd be referring to famous people like Shakira, Madonna, or Beyoncé. A lot of us have first names, but the point isn't that one's family calls them "Dave" without ambiguity.

There were many unix instances, and likely multiple djb logins around the world, but there's only one considered to be the djb, and it's dur to fame.