There are elements of truth, but I wouldn't say they're significant. Certainly there are exaggerations.
I believe everything she described is accurate, but her perception of the reasons behind are too simplified.
If she wants to get laid, she can obviously get that done with zero problems.
But if she wants to start a relationship with a Japanese man, I certainly think that intimidation would not be the primary reason. She said it herself in her writeup, Japanese men are attracted to western women. They'd be more than happy to get them in a love hotel and have their way with a western woman. But to get into a relationship with one? That's violating big family expectations when you're dealing with such a strong patriarchy based society. So in Japan, I would say the biggest reason for that would be culture and tradition, more so than intimidation.
Where I believe she is wrong in her writing was when she wrote, "Strong, independent, assertive and outspoken, they were interesting to admire from afar, but no man would ever dream of striking up a conversation with one. Western women were so different, so foreign, they were virtually un-datable."
It should be more like, "Strong, independent, assertive and outspoke, they were interesting to admire and have sex with in a love hotel, but no man would ever dream of marrying one and having children with them. Dating a western women would be abhorred by his parents."
As for the reverse situation, that's a reciprocating prejudice. The recent census results for mixed marriages in the US showed the same. White male and Asian female married couples far outpaced other sex/race combinations. Look in any magazine and you will see advertisements depicting the same. It is become an "acknowledged" combo in terms of first world nations. So that is nothing new. Certainly it's worth noting that interracial marriages are also prone to even higher chance of divorce, but that too is stating the obvious.
A friend sent me this link
No Sex in the City: What It