Calculating impact by dividing the number of deaths caused by a thing that has existed for 4 years over a population size that includes people more than 100 years old won't arrive at any sort of meaningful number. That's why you use rates, or per capita, or some other way of adjusting for population size and time. COVID 19 is the third most common cause of death in the US in 2020 and 2021. Calling one of the most common causes of death a small number of people is grossly inaccurate.