Why are the elderly being vaccinated against COVID-19?

Why are they making people get the COVID-19 vaccine when even doctors aren't getting it themselves?
I have a relative who is a 67-year-old internal medicine practitioner, and he has never once
taken it himself. Instead, when patients come in, he bundles it with the flu shot.
He forces them to get it because it's free, and if they refuse, he scowls at them,
then proudly tells me that they ended up getting it lol.
Has the vaccine contract volume been going on for about 10 years now??