There is a difference how they see the ongoing war. Americans think that it is a conflict between America and Russia, and because their attitude toward their government may be critical, they tend to find fault with the Western camp.
We Europeans clearly see it in a different way: it is not mainly a conflict between Russia and the U.S., but between Russia and Europe -- and in the larger sense between the East and the West.
In the past Americans and Russians often talked about the international affairs over the heads of the Europeans, and seeing this conflict as one between America and Russia still has echoes of that setting.
I think this explains many of the differences of opinion here and elsewhere.