Ironically, the west's most looked to academic expert on Russian Studies would completely disagree with you. He warned that you would see the argument being pitched that NATO remains justified today, to "manage the security threats provoked by its own existence." Even 'US policymakers' advised that continued NATO encroachment would result in a military provocation in Ukraine. Who ignored their advice? The American foreign policy establishment. But I'm sure 'nobody' ever saw that coming, right? You know who else made similar observations? George Kennan, who was the architect of America's containment policy during the Cold War.

And you didn't even carefully read the reply you commented to. He didn't say the US was responsible for the Russian army rolling into Ukraine. He said the US is responsible for engineering the conditions for a proxy war to take place.