I think what you call a "Semi" is known as a "truck" outside the US. Vans are used as last mile delivery.

Snake oil?
I think you maybe don't know what snake oil is.

What NV is selling isn't snake oil in the slightest. Whether or not it's really needed is an entirely different discussion.
The bubble hypothesis would have you believe that they're selling Ferraris to people at the Ford dealership.
i.e., you can complain it's all a bubble, but you can't argue with the efficacy of NV GPUs at doing this job that may or may not actually be profitable.

You were good up until 5. The scenario necessarily precludes 5 by virtue of 1.

It's also about that hostile third-party being the Government that has jurisdiction over that company, which means it implicitly also includes backdoors (that could even be unknown to the manufacturer)
FTA:

Which is frankly orthogonal to a battery fire anyway.
Opening the contactor will not stop the battery fire that is underway, and the contactor remaining closed improperly is unlikely since the battery is fail-safe (requires signal for contactor to close) so a situation where the vehicle is unable to disable the battery, but a fireman is is pretty hard to imagine.

Beyond that, it's also hard to imagine that anything that will cause a fire won't also trigger over-current protection.

I think this scenario is basically entirely contrived.

There are regulatory agencies whose job it is to figure those thing out and hold manufacturers to task.

Log availability is great. Automatic export to an untrusted party is not.
The NHTSA does its just just fine with vehicles that don't export their logs overseas.

You're right- it's about shit that anyone could produce.
However, the Dutch are in a spot of being... mmmh, vulnerable to US ire, due to ASML.
Dutch action followed the listing of WingTech (Nexperia's owned) under the US export control Entity List.

Complaining?
Who's complaining?

UK and Dutch action against Nexperia happened after the US listed their parent company WingTech under its export control Entity List.
That list has implications for foreign entities using US-controlled IP as well.

If the Dutch "bent over" for the Chinese, it was not without US blessing.

No shit. Sounds like a bus designed by fucking Amazon.

Simply untrue. This falsehood has been peddled for ages.
I had to take some courses on GDPR/ePrivacy compliance.

The short-and-skinny of it, is that only one type of cookie is allowed without consent- and that's strictly required cookies.
At first reading, this sounds reasonable.

However, what it actually means is that as a web developer, if the user's preferences (basically anything meant to last longer than the current browsing session) are stored as part of the state that session cookie represents, then you must ask for consent.

Basically- completely normal website activity requires consent.
If it strictly addressed third-party cookies, or tracking cookies, that would be one thing. But it does not.

Thank you for your misinformation, though.

The Dutch find themselves in the unfortunate position of having to be the US' bitch.

ASML is the center of semiconductor lithography on the back of several patents controlled by the US Government, and that control is cemented in many international treaties that the Netherlands are a party to.

Pissing off the US means losing those patents, which means the Dutch lose their position in the center of the world's advanced semiconductor business.
When the US is a rational actor, there's give and take here. But since the US is Crazy Eddie as fuck right now, the rational move is to play ball with the hegemon.

This isn't a matter of judgement.

It's not like the Chinese are evil in doing this. All manufacturers of this shit are doing this now.

The problem arises when you consider the fact that China may, at some point, become an actual enemy of your country.
A domestic company is unlikely to become a credible threat to your country.

The concern is legitimate. No judgement needed.

You're an idiot.
This has nothing to do with the fire department shutting down a vehicle in the event of a crash, which is an odd thing to even be concerned about.
Vehicles shut themselves down in the event of a crash, and have for many, many decades.
This applies to electrical vehicles as well.

If your method of shutting down the battery in the event of something catastrophic requires 2-way communications over a cellular modem, you've seriously lost the fucking plot.

Indeed. And if you, the customer, could choose where that data goes, that would be one thing.

Baking in call-home and automatic-update functionality is a disease that people are only starting to wake up to.

I don't think any security services are daft enough to have actual backdoors now. They just look for vulnerabilities and then keep quiet about them.

So I'd be more worried about the mass bricking US made routers, world-wide. Do it as a false flag, pretending to be some teenage hacker. Give their own tech a nice boost too.