I think the fact that to Elon Musk the morals of this are confusing to him, says a lot about who he really is.
Or rather confirms what many may have already expected for a while.
Russia started an unprovoked war against a peaceful neighbor. Ukraine is defending themselves, while Russia can end this instantly, by merely going home. How can Musk doubt the Ukrainians right to defend themselves?
As I see it, he can only do that by having no empathy or sense of morality, something he has shown in many situations now.
Also the escalation thing is a very clear Russian and Putin talking point. Russia call it Ukrainian escalation even if Russia did the same 10 times worse. The only escalation of this conflict is 100% due to Russia being the aggressor and their continued aggression.
He calls himself a free speech absolutist and uses saudi funds to buy twitter at the same time. Then the Saudis use twitter data to give the death penalty to people who don't like them publicly on twitter and elon does - nothing.