Vietnam is poor country, of course it is not up to the West standard even I am Vietnamese and when I went to Vietnam cities, not only dirties, poor hygiene, and people are uncivilized and chaos compare with U.S.. That is similar how I look at China and Chinese too, more barbaric, bad behavior than Vietnamese which I dont want to talk about.
However, I understand one thing. Vietnam was country endure so many wars and the country just got some peace for development. It will take centuries for Vietnam to catch up the west. Had I not come to the west I will be just like any Vietnamese there. And that does not make Vietnamese women less attractive, once the economy leverage, they will have more time to care for their appearance.