Similarly, I was recently informed that it was my Twitter birthday. It was not the same as my legal birthday. This does not, however, deprive my legal birthday its significance.
anigbrowl then came in with his "Skkkkrrrrriiiiittttcccchhh No, most of us are pretty happy with it because it works" remarks, which I felt was rather flippant. My response was meant to show anigbrowl the logical conclusion of his position. It's not an unrealistic possibility either, I believe it's been at times the official policy of Facebook, Google Plus, Blizzard, and S. Korea.
My point is that, no, a single identity doesn't work and really it never did. We all use many different context-dependent identities as we interact in life.
The logical conclusion of anigbrowl's position is not "You will be permabanned from this service if you can't produce a driver license reading 'anigbrowl'." This is an argument against a much more ridiculous stance than the one he took.
My response is as germane to this thread as your comment was.
Reply here with a link to a scan of your State-issued Driver's License and national passport proving that your legal name is, in fact, "anigbrowl" in the next 24 hours or your account will be deleted and you personally (i.e., your legal identity) will be perma-banned from this service.
(Not really, I don't admin HN at all. But you won't do it either.)