Because mainstream westerners ignored all wars until Ukraine, they don't know we've seen all these tricks before. They don't know the war propaganda is airing reruns. They think it's new to compare today's Official Enemy to Hitler. They never question the atrocity narratives.

They don't know the US always lies about every war. They think it's a crazy conspiracy theory to suggest that the actions and motives of their government isn't what they've been told. They say "Uh, hello? PUTIN is the one who invaded!" like that makes it impossible to be lied to.

Because they weren't paying attention to all the empire's tricks leading up to this, they don't see the same old patterns rolling themselves out yet again, often by the same old voices as before. They don't know what patterns to watch for, so they don't see or recognize them.

That's the only reason their eyes don't reflexively roll when they're told today's Official Enemy invaded completely unprovoked, solely because he is evil and hates freedom, or that the US is defending its friends the Ukrainians because it wants to protect freedom and democracy.

If you only just started paying attention and don't know the US power alliance literally always lies about every war it's involved in, the war propaganda slides down their throats with zero gag reflex, because they don't recognize it as propaganda. It's unfamiliar to them.