I'm a software engineer at Waymo, speaking for myself.
I agree with the premise of the article. Humans are remarkably good at driving, and making a computer better will be hard.
Where I may disagree with the author is, I think the project is both feasible and worth doing.
It's worth doing because we drive a remarkable amount. Even at human safety level, more than a million people die every year in car crashes.
As far as feasibility, Waymo is, today, running a fully autonomous, no-human-behind-the-wheel ride hailing service in Arizona. It's not a dead-end demo, it's there. I know, a Phoenix suburb is not the same as NYC or Mumbai. Trust me, I know -- probably better than you! Nonetheless, what we accomplished was impossible a few years ago.
The history of AI is a history of moving the goalposts and then blowing past them. AlphaGo solves what was considered one of the hardest problems in AI, but now that I see how you did it, eh, it's not that impressive. GPT-3 passes the Turing Test and can almost pass a coding phone screen, but come on, nobody really thought that a machine that passed TT would be intelligent. It was just a few years ago that respectable people were saying we'd never solve protein folding. Now that we have, the goalposts have moved again. Don't worry, we'll blow past those, too. Except this time people will yawn.
So give us some time. This too will happen slowly, and then all at once.