My personal opinion is that he is. There are some people his age who appear more sturdy, more with-it but he, to me, appears to be like he’s out of it. When he says things off the cuff (unrehearsed comments that are not written down for him in advance), it’s scary what may come out of his mouth.
Late night comedians who are Democrats, such as Stephen Colbert, make fun of him all the time. There are lots of YouTube videos of Colbert making fun of him. It’s hilarious and accurate.
I voted for Biden but I really would have to think hard before voting for him again. Of course, given the choice between Biden and Trump or Biden and DeSantis, I would chose Biden, but I am hoping he steps aside and lets some new blood step up for the Dems.
If I made comments about Biden being barely able to string a sentence together to friends (not friends here, but friends on FB, for example), they rush to his defense about how he has a speech defect, a stutter. I’m talking about more than that. I’m talking about his whispering, his babbling, his staring into the camera and not seeming to comprehend much. He appears weak and very old. Those are just my personal opinions.