Only one side has had meaningful advances.That's not true, as Ukraine has scored significant non-territorial advances (like forcing most of the occupier's fleet to retreat from Crimea) in the same time frame.
Also you're setting an arbitrary time window of 1 year (when if we want to evaluate the conflict meaningfully, we need to look at how things are moving now compared to the start of the conflict. Which is definitely not the outcome Russia intended. And ignoring Russia's considerable losses in achieving the paltry gains that it has (which are very much part of the attrition equation), etc.
What never works out is a smaller country winning a war of attrition against a (much) bigger opponent.
You're missing the point -- the smaller country doesn't need to "win" the war of attrition (in terms of effecting a complete reversal) in order to win the conflict. It just needs to outlast the occupier. For which there are no end of precedents in history, recent and ancient. Including (ironically) the U.S. withdraw from Afghanistan, which is apparently what gave Putin the gigantic (for him) hard-on that inspired him to sign his country for the same inevitable fate in the first place (but with much higher cost and KIA/WIA rates to his people along the way).
Did you catch Zelensky the other day? He knows where this is going.
I don't see any significance to that quote.
But it does seem pretty clear which side you're cheering for, in any case.