actualy, when the dragons first came about, the greens were impressed by women. however, when thread ended, the women became needed to re-populate, and gradualy started to stay home rather than going to impress. And When greens, with male parters rose to mate, they would have their own partner on hand to quell their lust, the bronze riders would keep their partners similarly to hand, as the weyr was not at stake, it didn't really matter.
It's true green dragons were originally ridden by women, but stand-ins are not an option in the 9th Pass. If they were, Brekke would never have had any problems with loving F'nor, as he could've been her stand-in when Wirenth rose.
Face it, even such masculine men as F'lar have had sex with men in mating flights. You don't think Mnementh was celibate until Ramoth first rose, when there were green dragons to mate?
From today's viewpoint Anne writes very traditional women. Some are shrews like Lessa, just waiting to be tamed by a hunk. Kylara was what could only be termed a scarlet woman, and she got her just deserts when she lost her mind, while the traditional Brekke got what she really wanted more than her dragon, F'nor.
Don't get me wrong, I really like these stories, but they're not feminist by a long stretch! In fact, the only truly liberated woman Anne's written IMO is Killashandra, but when you've been modified by a spore to live longer and recuperate quickly, while becoming sterile, the rules aren't quite the same as for the rest of us, are they?
Now, I'm not saying every woman should sleep around or even be a serial monogamist, but Anne's many female characters become much less interesting when they settle down and have children. Those who don't want a traditional family life are usually labeled as freaks of some kind.