

This is your response when you see facts you don’t like? Here’s a 2021 article on Biden’s support for Ukraine before Russia invaded:
Zelensky observed that Biden “knows Ukraine better than the previous president” and “will really help strengthen relations, help settle the war in Donbas, and end the occupation of our territory.”
Note the acknowledgement that there was already a war on.
While Zelensky’s comments may prove overly optimistic, there is little reason to doubt that the Biden presidency will be good for Ukraine… Whether Biden, who will face many demands on his time, will choose to engage personally is a different question. He knows Ukraine, having traveled there six times when he served as vice president.
To be fair to rank-and-file Democrats, I’m sure they largely didn’t know about the Banderite problem in Ukraine, if only because they probably paid little attention to the country as a whole. But the presence of neo-Nazi groups in Ukraine was certainly no secret. The Biden administration definitely knew the situation.

While I think there’s a real question about how much of it is willful ignorance vs. propaganda working as intended, you’re largely correct. The reality that most U.S. citizens have maybe a high school understanding of their country’s foreign policy is the biggest hole in the “imperial proletariat as labor aristocratics” theory.