I watched it too, and one can see it was not rotoscoped for the motion is too stiff and unnatural to be traced, and I appreciated the use of color and the evident sympathy of the creators for all participants in the tragedy it depicts. But I can't agree that it's gorgeous and can't understand why animation was chosen to tell this story, except perhaps to place some distance between the viewer and the characters and their stories. I would say "interesting" but not "significant".
 

I liked it a lot - the stiffness was fine with me. I loved the way the shadows moved across the figures - there was a sequence in a car where almost the only movement was the shadows. The animation seemed to fit, especially when the ending was reached and the real footage was shown.

It was as if the entire attempt to recover his memories was a kind of middle class experience, the choice of an intelligent man. Humans with options can decorate and interpret and explore, but once all options are stripped away the rawness of reality is all that's left.

I don't know what I'm writing - honestly I should try to sleep as I am making little sense.