If speeding is contributing to fatalities, changing road designs to discourage speeding is a reasonable response. We don't have to claim that fatal accidents are not related to reckless behavior to make changes to discourage reckless behavior.
So the solution to all of this is infrastructure change. However the solution that are often pushed will never be successful, ad campaigns against drunk driving, education about speeding and so on will never be the answer.
What statistics like that also hide is the people that did not die because they were not there. In the US, there is much less walking and biking because the roads are designed as they are. So of course people don't die often walking, simply because nobody is walking in the first place. And not many people walk because its dangerous.
So basically the US has reduced fatal crashes by simply not making it possible to crash into anybody else by the virtue of nobody else being insane enough to use this infrastructure.
This book goes into a lot of that: https://www.confessions.engineer/