Ukraine has more in common with Poland (which was ruling the majority of territories where Ukraine is now) than with Russia (which took those territories from Poland in the late 18th century during the partitioning of Poland).
This is laughable at best. Either you're from Lviv or not Ukrainian.
I'm half Ukrainian in Canada and didn't grow up learning much love for Poland. Ukrainian folk heroes fought against Poland. There's religious differences among Ukrainians because of Poland. It's the running joke that we're arch enemies.