I would think, "Good riddance to bad rubbish, because I would never date Singaporean girls!"
It might seem that my loss is the white guy's gain, but what I'm losing is something I don't value anyway, so I'm actually not losing anything at all.
Likewise, for a Singaporean woman who doesn't value Singaporean men, she would also not be losing anything if all Singaporean men were to choose non-Singaporean women as girlfriends or wives.
In any case, I still think it's safer for both men and women, of any race or nationality, to keep a safe distance from each other! haha