We have gone through that argument many times: A vote without free international observers, under recent military occupation, with testimonies of people being "persuaded" with little green men with guns is a joke. I do get that you may have a cynic vision of people's choice, my guess is that nobody ever asked you what would you like to do with your government and if they ever did you would probably pee your pants.
Already next year, Zelensky will have to show the whole world how to properly conduct free democratic elections in wartime. 
You mean it's not just a special military operation anymore?
Ukrainians will be fighting Russian aggressors to death.
Well, that means they'll die. Yes, Captain Obvious, aggressors will die. That's the whole point.