"All the Ukrainians have to do is outlast him", eh? How's that going so far - are they able to make serious gains on the battlefield?

Actually, pretty well (as wars go). I've said this before, but...

the Russian boneyards are almost empty, some of the refurbished equipment going back to WWII

the Black Sea Fleet has been seriously injured

the Russian bomber force has sustained heavy losses

Russian casualties are extremely high (with mounting complaints from the population about receiving loved ones in body bags)

the Russian economy is foundering

the Russians aren't able to replace equipment at a rate to keep this going without ramping-up production (which will affect their economy)

As long as the west supplies Ukraine, it can be said that Russia is losing this war. Just like we lost in Vietnam (fun fact: every major battle in Vietnam, we won...including Tet, but we still went home in defeat...they made almost no territorial gains against us) Like the Vietnamese, the Ukrainians are facing what most of them consider an existential threat. And, like the Vietnamese, they are motivated to outlast their enemy. Rinse and repeat with Afghanistan (at least 3 times), the American colonies, and more. Short of complete genocide, or the west abandoning Ukraine, Russia isn't going to win.

I won't address the other silliness you posted, because it is silly. And irrelevant.