I'd bet it has more to do with how little sleep candidates running for president tend to get. I'll be interested to see if he perks up after a few nights of really good rest. He can take a short break while his transition team does most of the legwork and brings him decisions to be made. He has no need to do any rallies for a bit.
His interview at his home was bad. He was way slower than he was in 2016. Something began to happen to Biden somewhere in 2018. He looks like 2 different people now and then. I do not understand animosity towards what I am saying: he clearly appears having decline, and if some hard-core democrats are willing to give and believe in excuses for that, many regular people are not.
