Is that actually the case, though?
I would hope, although perhaps I'm mistaken, that the developers of the actual self-driving systems would be able to effectively reason about what's happening. For example, would a senior dev on Tesla's FSD team look at the video from the article and have an immediate intuitive guess for why the car did what it did? Or better yet, know of an existing issue that triggered the wacky behavior?
Even if not, I'd hope that vehicle logs and metrics would be enough to shed light on the issue.
I don't think I've ever seen a true expert, with access to the full suite of analytic tools and log data, publish a full post-mortem of an issue like this. I'm certain these happen internally at companies, but given how competitive and hyper-secretive the industry is, the public at large never sees them.