Diagnosing someone remotely is malpractice.
Psychiatrists are political. No science is involved. Disorders are voted on by the craziest people you will ever meet, psychiatrists. Homosexuality becomes a political movement? Magically it no longer is a disorder.
My favorite disorder after Can’t Do Math Disorder and Drinks Too Much Coffee Disorder is Disagrees With The Shrink Disorder. These actually exist though they have fancy names for them. Yep. Disagreeing with the shrink can get you involuntarily committed.
I am not a doctor so I am free to speculate. It is obvious there is something wrong with the guy. My guess is he is closing in on late stage Alzheimer's. His short term memory is shot, doesn't know where he is, and has balance problems to name a few observations. One has to wonder how bad he is when the camera isn't focused on him..