Disclaimer: I am not pro-Russia just because I am not pro-Ukraine. To me this is a war between NATO imperialists/Ukrainian Nazis and a modern Capitalist Russian oligarchy. There is no good side in this war.
That being said, seeing support for Ukraine from people who didn't even know the country existed a couple of years ago always makes me roll my eyes. It comes across as shallow virtue signalling (even though I hate that term).
Compare it to people who support Palestine. People who support Palestine understand the history of that conflict and that it goes back to many many years of genocide on Israel's part.
People who support Ukraine typically know nothing of the history of the region, it's support for Nazis, it's pogroms, etc.
Even worse, sometimes they do know, they just don't care. 
The best part of when these people still think Russia communist. So crazy how many people have reverted to the same 50s' red scare hysteria that people used to make fun of.
Yes, absolutely. If anyone knows how to stay sane surrounded by libs, please tell me. Seriously, I'm very attuned to liberal bullshit around me and the dissonance and alienation is often just too much for me.
Also, of course these sides aren't equal, since one is the global hegemon. And even if they were equal, our foremost duty is to fight the imperialists at home, because those are the ones we even can fight. For Europe and US that means our primary enemy is NATO.
This is also known as revolutionary defeatism. It's not just libs, even many leftists struggle with this. It's so easy and convenient to fall into the error of social chauvinism. And much better for your career and social standing. And if you're in an org you have much less repression to fear, if you betray our international comrades to national/imperialist interests.