I met two Americans that fled Ukraine at the start of the war when I was in Budapest and they seemed pretty normal. Only really got to know one of them but according to him Kiev had an amazing underground techno scene and iirc he was mostly living there due to low cost of living. He was perfectly respectful to me and the other girl in our hostel dorm and we all got along pretty well. I never went to Ukraine so I’m not really disagreeing with you about the majority of them but I wouldn’t say it’s every single one or that that’s the only reason an expat would’ve chosen to go there.