Elon Musk now considers Ukraine his personal enemy for a variety of reasons. Those reasons aren't paranoid: Elon went out and earned them. I'm sure Archy is correct that Elon never blamed Ukraine for the initial invasion, but it wouldn't be surprising if he said something to that effect this afternoon. The narrative isn't changing because of new information -- it's changing because you need to parrot the U.S. President if you want to do business with him.
I don't think Zelenskyy can make a case for reclaiming past territories like Crimea, or slips of land from post-invasion offensives. Ukraine simply needs a full withdrawl of Russian forces, some sort of rebuilding fund, and probably a bulls#!t treaty from Putin recognizing its sovereignty. I don't think it even needs a NATO provision either way, although a face-saving promise not to join NATO for let's say 10 years probably works for both Putin and Zelenskyy.
This is all contingent on Ukraine maintaining its leverage: while Russia will always have more soldiers and materiel, the unexpected costs and failures of the Ukraine war have delivered a huge hit to Russia's military, economy, and global standing. It makes sense to end the war, and a 50% more credible and less transactional Donald Trump could have pulled it off. If Russia believes Ukraine is about to become far more vulnerable through the removal of U.S. financial and military support, Putin's original victory scenario is back on the table.