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.
And not to mention how the war is framed. Libs treat Ukraine as if it's like this perfect heaven baby democracy free from any kind of rampant corruption not to mention neo-nazis filling high ranks that exist peacefully in the forest with woodland creatures like Snow White. Meanwhile Russia is the big bad communist Orc who invaded the pure land of ~~Aryans~~ DEMOCRACY just because Putin was bored and likes killing people.
It's honestly maddening but then again we're dealing with anglos who have a very basic grasp on geopolitics and who's memory of history only goes back about 10 or so years.