whereas conservative almost always look within their own ethnicity first

Funnily enough, I don’t really see that happen. At least in my group of friends, the ones with the Filipino wives (and other wives from far away) are usually very conservative. They are then also very happy to talk badly about her family, her relatives and people from her country in general, but “she’s one of the good ones”.

Maybe it’s due to the fact that they can’t find a local woman who’d accept them, and that way they get a wife with very conservative values who’s also happy to talk badly about her family/relatives/people.