As an American, it seems like a perfectly reasonable creative decision to me. The film quite consciously is focused not on the moon landing specifically, or even the space program more broadly, but on Neil Armstrong as an individual. In this context having a lot of fanfare about the flag would distract from the focus of the movie and feel out of place, IMO. The idea that the only explanation for this omission is meddling by the Chinese is ludicrous to me.
My comment was intended in the context of the accusation that the situation was a manufactured controversy.
I can certainly understand your point of view and that there might have been an honest choice for that creative direction. But I also think it is completely understandable, and not manufactured, that some people were very upset by that decision, a decision that be could nothing other than deliberate.
I also think it's possible the decision was made for less than purely creative decisions. It's a business, decisions are often made on the basis of money, and it's not unreasonable to entertain the possibility that this particular decision was monetary in nature.
