Did your friend get tested at very first sign of symptoms?
Did he receive monoclonal antibodies at first sign of symptoms?
Did he have a doctor that would prescribe him hydroxychloroquine and azithromycin in advance of any infection?
Was he priming his immune system will at least 5000 I use of vitamin D, and additional vitamin C and zinc supplements before the infection?
Just asking because these three things in general will be as or more effective towards assuring a mild symptom outcome than very risky vaccines especially for someone his age. The vaccines are not vaccines they are only allowing for milder symptoms. I can speak to this from very personal experience with Covid myself along with my wife, and from friends who followed the same protocol before and at time of infection. One person also at 82 years of age.
If you really think getting Vaxxed is the one shot wonder to protect you from serious symptoms or death you are wrong.
If you were not aware of the degradation these vaccines have on your immune system, not to mention the known immediate adverse effects every time you get the shot or boosted you need to educate yourself.
Take them to a state that allow the real medicine to cure him and while there pick some up for yourself.