This looks like a stealth advertisement for their CT scanning business. There is nothing educational of value for the general public here.
The only reason you would do this is for competitive analysis and I assure you the other car companies have already analyzed these parts.
The part where they highlight the rippling in the lithium battery was interesting. They mention it can accelerate degradation over time. It's unclear if this specific example is within tolerances, but I have seen in other CT scans how dramatic the lithium rippling can become.
But overall, yeah, this is mostly an advertisement. They have other videos on their YouTube where they scan random items.
It's called content marketing, and there's nothing stealthy about it in particular.
There actually is a company who does this. full tear downs, of cars top to bottom. Interesting stuff
https://www.jalopnik.com/the-fascinating-company-that-tears-...
Yes, that’s exactly what it is. On the other side of it though, so what, we get to look inside stuff with a cool scan. They’ve been doing these posts for several years now, and they’re all interesting.