If the argument is that when viewed through the lens of today's technology these are seemingly insurmountable problems, then it is a weak argument for the case that the self driving car will not arrive.
It's easy to forget that what these cars can do today is leaps and bounds ahead of what self-driving technology could do a decade back. When these problems will be solved, it will be through other breakthroughs that we are not aware of today, so this is a premature obituary for self-driving AI.