The easiest way to prove that this is a composite, and not a naturally occurring photo / video is to look at the focus. Assume for a minute that all of the parts of the image on the right were in the same frame together at the same time. Even though overall it is blurry due to video, wind, etc, his tie is most in focus. Anything farther away or closer (ie boom mic) will be in less focus. So if his hand was really in front of that boom mic, it would be at least as out of focus as the mic, if not slightly more so. But it is about as clear as the tie.

No question for me that it is faked. A composite of two (or more?) different videos.