Doesn't prove anything. Just raw meat to titillate a set of speculations and leaps to conclusions. People physically change with time (as I am finding out, being not far from the same age). Mysterious behavior of the military is only...mysterious behavior (no explanation). Being left-handed at one video appearance may only be the result of a cramp in his right hand; he is otherwise shown as right-handed. Eye color may change, or he may be wearing tinted contact lenses. It is now known that they have constructed an Oval Office surrogate in a different building. Why? Who knows? Maybe it is closer to the restroom than the real Oval Office.

I mean, it's all very tempting so long as you are failing to say things out loud and establish whether what is shown is proof of anything. But it is bunk. The end result is that he does things that only a President has power to do. Whether he "is" the President doesn't stop him from making life miserable for us. Cope with the reality, not with the head trip.