my legal last name has been "Null" for a bit over half a year, and I've had no problems. before changing it, I asked a friend whose legal last name had been "Null" for a couple years. it hadn't had any issues. this article (and the one about the British guy) is overblown.
RandomBacon|1 year ago
null_name|1 year ago
The funny thing is, the real thing that's caused me problems is that I changed from a name with a middle name to one without. Some systems did not handle this transition well. PATCH instead of PUT, or something.