I had a guy on reddit WAAAY back when the war was just starting (when it was clear they would invade, but either had not yet or had literally just begun hours before) tell me all the Ukrainian citizens had to do was not resist and accept their Russian citizenship, the Russian soldiers were their ethnic bretheren, it would all be over nearly bloodlessly in three days, and of course Putin would not harm anyone if he didn't have to.
I was in disbelief that he believed this was true, or that he could believe there was any possibility they'd just stand by and let themselves be invaded. A month or so later I dug out the thread and called him out for his ridiculous bullshit (which had already been ridiculous bullshit when he first said it) and he gave me some version of "any bloodshed is the fault of Ukraine" and cursed me out.
I fathom neither how anyone sees Ukraine as anything other than the victim in this war, nor how anyone could ever have thought this would be quick and bloodless.