While the article doesn't actually use the word "never", neither does it hedge and say "anytime soon".
The central logic seems to be that humanity is starting from scratch building self driving cars, versus all the years of experience decades ago trying to automate spacecraft and submersibles.
Oddly, I reach entirely the opposite conclusion. The article reminds us that even decades ago, with rudimentary computers, engineers developed systems that landed men on the moon and returned them to earth.
This article has made it even easier for me to imagine a car taking a fully autonomous trip to a McDonald's drive through,
given the state of deep/machine learning, low cost computers a million times faster, and big advances in sensors,
Yes there will be a person supervising the car for a while, of course that's true. But it's only a matter of time before our children are surprised that humans were allowed to drive cars, causing millions of deaths.