AUSJ is indexed not at that link but here.

So why does this work for women, but not for a lot of men?

For the same reason that when sex get's exchanged for money, it's the man paying the woman.

It works for some women and some men. Women write about it more because on the whole Christianity does them more harm sexually than it does men.

(But is it worth saying one more time that LW isn't a good place for extended complaints about the "growing incidence of adult male virginity"?)

More atheist propaganda about how atheism organically leads to sexual fulfillment:

For Christ sake, how did you even reach that conclusion? Already it's a miracle that that woman could reach sanity after having been raised in such an environment. And you call having an orgasm after a decade of abusive relation "sexual fulfillment"? And how is that related to atheism (which is not mentioned in the article), instead of, say, not insanity?

So why does this work for women, but not for a lot of men?

From a Christian fundamentalist society, where you're basically handed a sex slave when you get married, to a saner society, where you get only what you can gain for yourself, it's obvious that the jump finds many men unprepared.
In any case, it's not about religion at all, it's about emotional and sexual education, and the lack of it can be found in any society, whether religious or secular. Japan, e.g., has an egregious history of emotional repression throughout the ages. Just as in China, where they found that killing females at birth en masse might not have been such a smart idea, after all.

I guess the reason these Japanese guys are single has more to do with them being unattractive than with them being atheists.