I think the cognitive worries about Biden are exaggerated. Same with Trump.
Both guys are much sharper than they get credit for. Trump has severe personality disorders and narcissism, but I don’t think he’s nearly impaired as others think. Biden, same deal. He’s way more alert and aware than people think.
They aren’t as sharp as they were 25 years ago, but this notion that they’re both unable to tie their own shoes is greatly blown out of proportion.