I agree with the bulk of your post, but I'm not convinced by the quoted bit.
The US and Ukraine have had a Strategic Partnership since
2008. Obviously it was a bit dated after the to-do over Donbass and Crimea in 2014, and the 2022 Statement on the Strategic Partnership was a lot stronger on Russia and Ukrainian territorial integrity. But there's a bit of chicken and egg about whether it was a cause of the invasion or a response to a Russian build up on the border with Ukraine.
The Statement is dated 1/09/22. According to
this timeline about the run up to the invasion the first US side eye at Russia's intentions in Ukraine was in April 22, although they weren't taken seriously at first and it was hoped the US-Russia summit in Genneva on 16/06/22 would've calmed things down. That was followed by Putin ramping up his rhetoric on Ukraine and growing concern by US intelligence agencies over the summer.
So the 2022 Statement on the Strategic Partnership was agreed against growing concern that Russia was planning to invade Ukraine. By the time it was released in September the US seems to have thought it likely, and by the time the Charter was published in November the US seems to have been convinced that the invasion was in preparation.
Was it a US attempt to warn off Russia that failed or went wrong? Did Russia, at an early stage, see the reopening of discussions around the US-Ukraine Strategic Partnership as a reason to invade Ukraine, even after Putin had been going on about the historical unity of Russians and Ukrainians at least since
2021? Or was it just part of the ballet of international doings in build up to the invasion that has no real bearing on whether the invasion happened or not?