Many people don't know what their health status is and that can change month to month, year to year. In the United States obesity is very common and I see many, many anti-vaxxers who appear unhealthy and overweight. Covid can take them out in a month where many would live for decades longer. Leaving behind pain, grief and sometimes clogging up our healthcare system where others, more responsible people have to hold off on their own medical treatments.
Billions have not had it, not even close.
Again, with that almost 700k what seem like expendable lives in your book being the big difference here. Not to mention what COVID does to many who survive and are left with even more health problems.