I wouldn’t be surprised. Ukrainians had to work under the USSR. Far from privileged, they would easily pull more than their weight in the US. They are good ppl and deserve better.

I believe it is cultural. I grew up in Ukraine and lived until I was 24 y.o. And looking back, I never was worried about finding a place to sleep when I hitchhiked around Ukraine in my high school and student years, because strangers always would open their doors for me or give me a ride for free without expecting anything in return, when I was older and got stuck in the snow blizzard with other cars and couldn’t get back home and Ukrainian 911 told me to rescue myself, some strangers in the next village opened their houses for all people who got stuck, and were helping us to clear the road to move our cars after blizzard passed. When my old car was getting stuck during winter, there were always people who helped to push it out back on the road. Same if your tire gets damaged - someone will always stop to help.

Just give more green cards away, they will come.