Well all violent crime in the US has been getting lower since '93, except a small uptick around 2016-2023ish (going back down now), and of course that does include children, and yes safety has helped there as well, but the specific study that I was referencing took place during covid in NYC, Philidelphia, LA, Chicago, and iirc Baltimore, and it included 18-19 yo “kids” who are legally adults, and actual kids that are sadly involved in gang activity surprisingly young but gets more violent around 13-16 (know/knew a good number of them, but never got involved myself.) It was never actually true that guns killed more kids than cars, if you take out the 18-19yos and do that same study in the same cities now without the lockdowns (which still gives guns the advantage because many of those cities actually have good public transportation thus decreasing car use in general, and those cities still have the aforementioned gang problems) you’d likely find that cars are in fact still the leading cause of death amongst actual kids.

Tbh if the opioid epidemic couldn’t unseat cars, nothing will without statistical manipulation.