that's because they don't want the women that want them.

I dunno if that one is true. The study showed that across the board women didn't like them, whereas most men weren't very choosy (except for white guys) In my personal experience though its been the opposite with black women. I swipe right on them but I rarely if ever match with them. Out of the 50 matches I've had on Tinder for the couple of weeks I've had it only 1 has been with a black woman. The rest have been white or latina women. But this is all online though, which brings me to my next point.

One could just as easily say that Asian men just don't have the dating skills appropriate for western dating.

I think this is the biggest one. Online its brutal but not impossible, however irl it's not so tough once you figure things out. I've dated women from all sorts of ethnicities, but I would be lying if I said I didn't think white guys who, if all things were equal, would have an easier time because dating is just easier of a setup for them. They have family, friends, etc who can all relate and give advice whereas for Asian men there aren't as many resources. Asian men are raised to usually be a bit more timid, and generally aren't the type to display confidence, which obviously isn't true for all of us. A lot of people just have preconceived notions of what Asian men are like though, without getting to know them first.