Russia wasn't aiming for dismantling Ukraine at first right? If Zelensky abide by Minsk accord non of this would have happened. All Russia ever wanted was a neutral Ukraine, don't become a forward base for NATO, is that too much to ask?
Even the dumbest person on the planet can see Ukraine is being used as a pawn for NATO to poke Russia with, yet Zelensky is happy to be this pawn in great detriment to his country, what does it tell you about him?
Now though, yeah Russia is probably aiming to dismantle Ukraine, only because they've ran out of option. Still, a peace treaty now is better than a peace treaty a week or a month from now with god knows how many dead and the cities in ruin.