That's the metric Tesla and the self-driving car industry would like to use, but I don't see why it's the most important. Also, it misconstrues 'most important'

That's the metric Tesla and the self-driving car industry would like to use, but I don't see why it's the most important. Also, it misconstrues 'most important' to mean 'all that's important'. We could just ban personal vehicles to improve overall safety.