I have no idea why you keep going on about various other countries' naming laws, when the passage in question wasn't even talking about enforcement at all:

> Facebook likes to think of names as a one-to-one mapping. You have one name, and that name is how people refer to you at all times. It’s a very WASP notion of how names work, and the reality is far more complex.

Facebook, as an American company, inherited its ideas about names from mainstream American (i.e., WASP) culture. This was a poor choice, because those ideas do not also cover how some other cultures treat names. That's all this is saying. Your interpretation of this as "inflammatory" and "mischaracterizing history" is frankly baffling.