Twins in Popular Culture: The Social Network

OK, so I haven't seen The Social Network, but I think that's no reason to avoid commenting on it.  The New York Times recently ran an article about the Winklevoss twins' ongoing lawsuit against Facebook.  What jumped out at me was this sentence:

They are as physically striking and imposing as they appeared in the film, “The Social Network, where they were portrayed by one actor, Armie Hammer.

One actor?  Isn't this offensive to twins?  In addition to perpetuating the myth (that this blog fights tirelessly against) that identical twins are the "same person", doesn't it take away jobs from hardworking twins to have Mr. Hammer act in "twinface" in this movie?

Or am I taking this too far?