The poster to which I responded and the article are each speculating on the "why" for this contract. That said, we do not need to speculate about Cybertruck sales - Business Insider reported that Tesla sold only 5,400 of them in 2025Q3.
We know from this that they do not need the same level of third-party 4680 capacity, and (call it speculative if you so desire) this is the most parsimonious explanation for the L&F write down.
I agree about those facts that the companies themselves posted. But for journalism to occur my hope would be the author needs to find out what that means for Tesla instead of speculating. Perhaps if it was posted as an opinion piece.
It's 'wild' to this person because it challenges their opinion on Musk and Tesla I have to guess. This is a classic 'it is bad reporting because it does not agree with my worldview' take, aka 'fake news'.
The one comment suggests a valid alternative. It doesn’t suggest that this was ‘wild’ reporting - which was your original point. The article still adds information, analysis, and not much speculation.