Jim, Biden has looked frail for a long time. As I have mentioned before, when I ran into him on a train — years ago — he looked like a candidate for a silver alert.
I think most people know that Covid is more dangerous the older you are, but just how dramatic that is may be under-appreciated. Biden is 79 years old, and people in his age bracket are 140 times more likely to die from Covid than those in the 18–29 group, and about 14 times more likely to die from Covid than those in the 40–49 group.
Even if Biden were a phenomenally youthful man for his age, he’s still turning 80 in November. Biden’s economic ideas suggest very strongly that he isn’t very good with numbers, but it may be that in this case he is responding to the figures.
https://www.nationalreview.com/corner/biden-and-omicron/