I'm not sure whether Joe has dementia proper or is just rusty due to lack of use. If he really has early onset dementia, I would think his wife and family would step in to prevent the inevitable train wreck.
Joe has always been a bit of an idiot so dementia might be hard to tease apart from his regular buffoonery.;-)
Gotta be careful when using “giphy”
A lot of times they link to a youtube video or play an Mpeg...