Its about war and not valuing human life. Slavic countries historically lose huge amounts of men on the battlefield over and over.. so the ratio of available men to women are thrown way off. the surviving men take their pick of the litter for mates.
I find it really weird that the best possible outcome for this seems to be just letting her take her zombie husband home. Like... Just accept he's dead and move on, lady.
The first thing that jumped into my head was that meme about American couples where the couple is always Nice, Decently Attractive Woman Plus The Most Racist Man Alive. It's the same dynamic.
If the Slavic women aren't drinking, thus making them all on average prettier than the men because drink makes you ugly, then I fear for what they are actually doing instead. Probably cocaine.
A Slavic person chimed in it actually is a real phenomena based on a toxic culture in high school that encourages young men to drink an excess of alcohol.
It's hard to look good when you get peer pressured to drink alcohol until your liver fails