I felt sadness and sympathy for all of the poor dears I encountered working in those nursing homes. Some knew what was happening to them and it frightened them. They were the ones I got close to, to try my best to comfort them.
Some had no idea what was happening to them and they too
would also repeat the same stories over and over or one day recognize you and the next 10 minutes later they had no idea who you were and sometimes even become hostile towards you.
That's another aspect of dementia, the hostility and even aggressive behavior dementia patients are prone to and Biden is exhibiting that very behavior.
I hope he has a stoke, really. He's a vile man with no redeeming qualities. He deserves to live in pain.
I had a 93 year old great aunt with dementia that kept attacking the other residents (until the day she died). They never found out what it was about. One of the nurses joked that the one good thing is that you could give the same person a birthday party, everyday, they always thought it was their birthday (gallows humor intended).