I found that the most unconvincing part of the video. Quite apart from the point you mention, even in the most-likely-edited video there was a noticeable lag be

I found that the most unconvincing part of the video. Quite apart from the point you mention, even in the most-likely-edited video there was a noticeable lag between when she said to take the picture and when it happened, and that is not accounting for the second and a half it takes to actually say the sentence. How would we react if anybody released a camera with a 3 second shutter lag and then advertised it as ideal for photos of action scenes? Then factor in the high probability the voice recognition fails or a network problem occurs or bluetooth disconnects or any other random thing and I can guarantee this is 100% absolutely the worst possible way to try and take a picture of any scene you care about.