I know a few, and while they're generally no fan of Putin (who you do not in fact have to hand it to), massively in favour is an overstatement.

Socialists of course are just in despair with Nazis running free and even the anti-Russian left censored and shut down, but even with libs who regard it as an unambiguous war of self-defence it's not pure jingoism.

I think people are greatly underestimating the cost of this war, it's like the home front of WW1 there right now, a generation wiped out, then replaced by the next set of 18 year olds, that also get wiped out. Except Ukraine is careful to keep casualties as invisible as possible. Rationing and complete shutdown of much of the economy. Meanwhile Russia can soak up the deaths with less impact on their society.