As I have written before, back in the 90’s my dad as descending into dementia. We took him to a great hospital in the Chicago area and had him evaluated When I went to see him the next morning, he was absolutely oral. I said to the nurse “how did you get my father back??’. She said Haldol. it will wear off soon.
I don’t know what they use today, but Biden is obviously taking medication for when he actually has to interact with people.
That was the same thing with my mother as she descended in the long dark night of Alzheimer’s. Medication staved it off for a while but like a damned up river each time the meds wore off the dementia increased until medication simply didn’t work anymore.
People who don’t work in the medical field don’t understand that. There is no magic pill that is going to turn you back into a 28 year old when you’re 78.