It’s tragic, but many orders of magnitude away from your claim.
It’s not the quantity that makes it horrible, tragic, and infuriating. It is all those things because it’s evidence of a larger systemic issue which includes lots of other awful things that fall short of homocide; and it’s largely unnecessary.
[0] https://www.cdc.gov/healthequity/lcod/men/2017/nonhispanic-b...
[1] https://www.statista.com/statistics/585152/people-shot-to-de...
You're right the quantity isn't specifically important but it does illustrate that there is a problem. Even if it is not the #1 cause of death it is disproportionately higher.