I just watched one of his latest movies -- He wasn't there
Bruce wasn't there. He spoke slowly, and was a shell of his former self. At one point he smiled, and it was the old Bruce.
But generally he had a blank aspect, was clearly repeating words without context, and couldn't listen and react. There was nothing of the old Bruce except that one smile.
How that creepy, blood-sucking family could have allowed it to go on for so long shows little regard for his welfare.
They should be ashamed of themselves.