It's both possible that the US is uniquely worse and that the same sort of unfair and senseless outcomes are not only possible but happen in other countries. The fact the US is worse doesn't actually change the point of the person you're responding to.
I could write a much better indictment of driving in the US than pointing to a single random occurrence and actually talk about the completely fucked way people drive here on a daily basis. That said, the same basic reason why things are the way they are won't change for the outcome of my screed, as it is a simple matter that the US is so heavily car-centric as a society that it is impossible for the average person to participate in daily life without driving and therefore it's seen as unnecessarily punitive to restrict people's driving privileges except in the most egregious circumstances (and often not even then). We'd have to massively change the attitude towards cars in the US to effectively change anything about our current situation to make it possible to enforce reasonable standards of driving skill.
For pedestrian deaths, there's been a decoupling between the US and the rest of the developed world in recent years.
https://www.vox.com/culture/23496462/crisis-american-roads-p...
"The pandemic years weren’t outliers, though. Pedestrian fatalities have been on the rise for more than a decade. Increasingly, the United States stands alone, with an overall traffic fatality rate that’s 50 percent higher than comparable nations in Western Europe, Canada, Japan, and Australia. According to the Urban Institute, Americans are now almost three times more likely to die in a car crash than their counterparts in France."
Before you blame cell phones, note that other countries also have cell phones.
https://www.nytimes.com/2022/11/27/upshot/road-deaths-pedest...