2 things that surprised me: one is that my manager and co-workers all follow the games closer than I expected. Second thing is that as Americans, they obviously do not approve of those fake things but understand that why Chinese did what they did and took "not my business" attitude.
My impression out of this casual chat is that lip-singing is the biggest mistake. It does not sit well with west culture. Faking exists in west countries, too, but not with children. If the motive of doing so was to give better impression to outside world on China, I am afraid I have to say that they blew it.