That statement also applies to humans putting things into coding..... and it's usually compounded by the fact that the coder (particularly at larger corporations) generally has little-to-no knowledge pertinent to what it is they're coding (assuming they even know/understand what it is they are coding). Though even if/when they do, they tend to think about it only from their own life experiences which can be very limited (e.g. a native Floridian or southern Californian who's never left isn't going to know much about driving in snow or on ice).
Add in how so many humans believe their own life experiences are somehow universal or absolute and it makes getting the poorly designed code/systems corrected an absolute pain ....well, until either a sufficient amount of money has been lost due to the ignorance/negligence - or the loss of life has been enough the liable entity/company doesn't want the negative attention anymore.
Automated driving may eventually become more widespread, but any automated system will be limited to executing the instructions/code it's designers implemented. ...and those designers are far from perfect (hence the concept/existence of "recalls").
Really until a lot of humans choose to improve their own behavior creating more tools/automation is just pushing the same old "imperfect humans" problem around.....
- speaking as an engineer who's career is focused on finding (& preferably preventing) the screw-ups of other engineers/scientists/coders (can be rather eye-opening how often designers will ignore the lessons of the past ....with some choosing to do so even after their noses have been rubbed in them)
Yes, no and maybe (or undetermined).
Once coded "it is what it is" and can be fixed/patched, etc. if/when bugs arise - once fixed ...well, I know too much about regression failures in code, so lets leave that aside for now.
The problem with humans is that every one of them learns by their own subset of all possible mistakes, to coin a phrase it is an error based learning system.
While not a "GOOD" driver I rate myself as "fair" with several decades of experience in USA, Western Europe, Ireland, England ...and a couple of vacation spots where I drove less than 100 miles.
Anyway, the risk I pose isn't how WELL I can drive, it is how BADLY !
Machines are more consistent - which makes faults identifiable and fixable.
Easy peasey - and as I have said before 3 or 4 years ago Teslas drove better than I did then, they are improving while I am declining.