Erm no, but unless you have personally experienced what these people have then you have zero expertise in the field of grief management. You don't decide how people should react to such events, not even if you have a Phd in Psychology. Everyone behaves differently and no one on earth has any right to tell bereaved people how they should or shouldn't behave, it's grossly insulting and shows the person making such statements - in ignorance - in a very unfavourable light.
But you really don't know do you? You may turn hysterical, you may cry, you may rage and demand to see your kids but in reality no one knows how they'd react in any given situation. The human psyche is a very complex thing, there is no right and wrong or black and white.
So in your opinion he is not really grieving, he's an actor. He never lost a child because we saw him smiling and laughing just before he had to address the US TV Networks on the death of his child? Is that about the size of it?