This is absurd. What you are saying is that we can save 20,000 lives per year if we all stop indoors, don't speak to anyone, and abolish sport and social events. That's the "new normal".
And for what? As it stands under the old normal, an average person over 80 had a 90% chance of living for at least one more year. What you propose will make it a 90.5% chance if it is a bad flu year, and a 90.2% chance in a good flu year. You are asking them to give up the best year of the rest of their life, for a 1 in 200 or 1 in 500 chance that they will gain a rather less good extra year. As I said, that is absurd.
I’d like to see the numbers of over 80s that have died after they have had the vaccine (not because of the vaccine) , that may shock a few of how many do actually die