> If I shoplift from a store and I'm not stopped, that doesn't mean that "we" have decided that my theft is okay.
Those aren't equivalent, though. Stores _have_ decided that _some_ theft is okay in the grand scheme of running a store.
Conversely, I think most of us agree e.g. that the incident where a woman was killed by an Uber self-driving Volvo[1] was _not_ okay, and that multiple negligent factors were at play that contributed to her death.
This doesn't mean that society thinks self-driving cars are _all_ not okay.
Similarly, the royal/societal "we" _absolutely_ have decided that collective driving is worth some quantity of deaths. We seek to minimize them, but there are extremely few people seriously advocating for the abolition of cars today, and they've been around for over a hundred years at this point.