Fake.
It’s just a way to keep Biden out of the spotlight making sure he doesn’t utter say any strange stuff, like he usually does. Then, after Jan 20, he’ll suffer some kind of sickness (covid?) that will take him completely out of the picture, and we all know what happens after that.
We all know how painful it must have been for democrats to put him in front of the TV to give ‘his’ thanksgiving message, and democrats don’t want to take another chance on some more awfulness like that before Jan 20. It was like a puppet on a string reading a thanksgiving message from a teleprompter. It was puke inducing.