Humans are bad at driving because they can get distracted and can only look in one direction at a time. A computer system based on visual processing shouldn't have either of those issues.
I agree fundamentally though that it's a weak argument to say a certain approach should be taken just because it's how humans do it.
The argument is not that it's because how humans do it. The argument is that the entire system was designed to be consumed as visual cues.
As far as we know, humans are better drivers than every other species in the universe.