I don't understand how the whole age thing doesn't make you think for a second your conclusion is a bit misguided. Can you elaborate how you think a population

I don't understand how the whole age thing doesn't make you think for a second your conclusion is a bit misguided. Can you elaborate how you think a population of average age ~60 handles any disease? For reference, a 70 yo has a 1.9% mortality. A 80 yo has 6% mortality rate according to actuarial tables.