The western women often complain about it as well.
The top tier women still get the odd guy or maybe even boyfriend, but average women tend to get nothing (because they don't date viet men - mostly because viet men are less wealthy and shorter then them).
A lot of the expat women tend to get a close-nit group of girlfriends avoid guys altogether, which is pretty hilarious because they come out with all sorts of cope.
Its literally a real gender role reversal and some of my male friends relish in it.
You have to warn some guys off women here because a lot of men haven't had these sexual options before so when they come out here they can often spend every night out with women drinking and dating (which is terrible long term for anyone - financially and emotionally)