I agree with this. Two things the Ukrainians are not likely to concede is the repatriation of UKR citizens moved into Russia and the return to the borders before Russian annexed Crimea. I think the the cost of rebuilding Ukraine is something to negotiate. Same with the War crimes investigations.The Ukrainians will never agree to this. They have the Russians on the run and won't believe any commitment Putin's negotiators will make. They want to push them back to the original borders of the country and they are planning to do it by summer of next year, provided we send along the ammo. And we will. The Lend-Lease bill gives the president a tool to use US stockpiles to replenish the UA and we have gigantic amounts of equipment, as do some of the NATO allies.
Once the fronts stabilize the Ukrainians might come to the table. Thye've already said they would accept the results of UN supervised referenda in Lukansk, Donetsk, and Crimea. That would mean they lose Crimea, probably. They'll live with that and EU/NATO membership, I think. But neither side will negotiate while results on the battlefield aren't close to final. As many have said, wars are easy to start and hard to end. As the Russians are finding out.