I hope the folks on this thread know I'm more than a little familiar with Ukraine. The Russophonic family lost everything in Gorlovka in 2014 and now have been evacuated from Poltava. Extended family and friends are all over Ukraine from Odessa to Donetsk. I have been there several times, even to Crimea a few.
Not every Ukrainian man is willing to die fighting the Russians. That's more than apparent. Likewise, not every Russian man is willing to die for this war: take a look at the outflow into Kazakhstan, Georgia, the massive plane ticket cost spike, etc. since the mobilization.
The majority of Ukrainian men are willing to fight and many are willing to die. There is a fury I've harped on running white hot and deep in Ukrainians now. It has not cooled. It has not faded. There is enough to fight this war for years, so long as they have the logistics to support the men in the field. The West is seeing to that.
The vast majority of Ukrainians cannot accept Russia. They cannot accept it anymore than the Americans could accept the secession of the southern states or the Chinese could accept Taiwan's independence.
The idea the Ukrainians are going to break or accept Russian overlordship is hopium at its most extreme.
As for Zelenskyy? The quote attributed to Ledru-Rollins best applies here: "There go the people. I must follow them, for I am their leader."
After the war is done, we will also see if Zelenskyy stays. If Ukraine expels Russia, well, I think the answer is pretty apparent.