I think a material difference between Iraq (v2 anyway) and Ukraine is that they can keep doing the "well Russia was the aggressor" thing indefinitely even if the reality is more complicated.
also yes obviously some libs are still stubborn about Iraq, the worst ones, but for the most part its generally agreed that the Iraq War was a bad thing.
Based on their other opinions, I dont think they would (openly) go that far which is why I'm kind of baffled by the statement and want to know what the hell they DID mean. Like maybe they dont think the USSR won the war alone. Or they believe Double Genocide Theory? Idk.
ETA: Oh maybe its that they think Operation Unthinkable was a good idea like another poster suggested.