They're not wrong; the attribution is part of the quote. In-game, the source of the quote is usually important, and is always read aloud (unlike in Civ).
I would argue that they are, if not wrong, at least misleading.
If you've never played Alpha Centauri (like me) you are guaranteed to believe this to be a real quote by a UN diplomat. It also doesn't help that searching for "U.N. Declaration of Rights" takes me (wrongly) to the (real) Universal Declaration of Human Rights. I only noticed after reading ethbr1's comment [1], and I bet I'm not the only one.
