I said this in the other translation, but they would've been better off just making the guy (not the MC, the husband of this chapter's focus girl) an abusive asshole that the MC has to rescue her from. Because this sort of weird indifferent "I'm doing you a favor giving you my ugly old hag of a wife that I don't care about so that I can also go get a young slave to turn into a sex toy oh and also work in my shop, heh heh heh heh heh heh" attitude is far more gross. But instead of leaning into how disturbing that is the author sets it up like we're supposed to respect his decision and just cheer the MC because he gets to love all the sexy milfs that their society casts off.
Justifying the universe's scummy behavior and ethics to no real useful end is a choice.