frankly, i'm left to conclude that the russians haven't been taking this seriously and haven't been legitimately trying to win this war and this could go down in history as a very serious error. the ukrainians have no such qualms and have consistently done any sneaky dirty thing they can to win or advantage themselves against a clearly superior foe.
this is technically a war crime, but nobody is going to care.
conversely....do the ukrainians want the russians to actually start trying to win this war? if so, they should keep it up. this is a foolish escalation by a foolish government.