

This the exact rationale used by climate deniers. Because you can state that there is “controversy” over an issue, you can dismiss it entirely.
The consensus is that Isreal is committing a genocide. Those who are disagree are a tiny minority, and should be considered nothing more than outliers. It doesn’t matter that some of the disagreement comes from nations like the US. They’re not more right just because they have a big economy and military.
As you said, “Wikipedia’s job is to describe historical and scientific consensus”, and that’s exactly the responsibility that they’re shirking here, choosing instead to gesture at a barely existent “controversy” that basically consists of “Isreal and their allies refute the claim.” By the same token we shouldn’t call Trump a felon because he still insists he’s innocent.

He’s cautioning that Russia will be capable of launching a limited attack, and that they do have the motivation to do so, if NATO allows them to believe that an attack would not be met with a response.
Russia is very eager to test the strength of the NATO alliance. With the US clearly faltering, they want to know if the rest of NATO will still stand united.
No matter how much Russia arms up, defeating NATO - even without the US - is not a realistic possibility. It could be, if they heavily militarise their economy while NATO countries allow our militaries to languish. This is why increased military spending is necessary, as much as that absolutely sucks. We can no longer rely on the US to foot the bill for protecting us, and we can no longer rely on access to the global economy being enough of a draw to prevent countries like Russia from starting shit.
No one wants to live in a world where being prepared for all out war is necessary, but that is the world we live in now and there’s really nothing we can do about it.
Our only realistic option for NATO member states is to strengthen and rebuild our military forces, strengthen our bonds with each other (this is why Operation Reassurance is so important) and create a defensive posture that will prevent Russia from even thinking of trying anything, while we slowly bleed them to death with sanctions.