For many years, my mother's proper legal name on her birth certificate was the empty string. This wasn't usually a problem before computers as she'd go by a given name instead, even on government paperwork. She started having issues with systems being unable to process her information in the late 90s and early 2000s. Background checks would fail, passports couldn't be issued, and so on. She eventually had it changed, but I imagine it'd be even worse now.
The hospital staff filled out most of the birth certificate, but left the name field blank when they gave my grandmother the paperwork to take home. She either didn't notice or didn't care (both possibilities are realistic) that the name field was blank and submitted it anyway. The state accepted it.
My mother started filling out her own paperwork around elementary school because my grandmother created so many problems that school staff would simply give up.
I assume you're making a joke. In any case, no that's not true. Because if it's your first and last name and you type it in both fields, you are now screwed in a different way.
A high school teacher of mine didn't have a last name, only a first name. Problem was when she moved (from India) she had to have a last name because a bunch of systems and people assume a last name as a fact, so her full name is just her first name twice because she didn't want to think of a different one :p
