Could you elaborate on that, please ?
It seems more likely, though not universal, obviously, that male players on E are less sexually flexible. Many male character profiles go something like this:Heterosexual, dominant, attracted only to females.
Sometimes they're slightly adventurous and are willing to play females who are only attracted to females. Sometimes they're not into D/s at all (though my view on the D/s aspect is skewed since I look at D/s type entries much more frequently than others).
Also, somewhat common, and much more common among male players than female or liege players.
Heterosexual, dominant, attracted only to females and will only play with female players.
Comparatively few male players are bi, submissive, switch, willing to play with liege or male players (even when the characters are female), interested in sex based RP with other gendered characters, and other types of flexibility that would increase partner opportunities.
Female and liege players seem much more likely to be willing to play both male or female characters, be attracted to both male and female characters (as well as trans, other, etc), be fine with playing with male or female or liege players and other sorts of sexual flexibility that allows for more opportunities to play with interesting people.
Desire is desire, and it's isn't really adjustable so, I'm not scolding or criticizing anyone - but paraphrasing Woody Allen, sexual flexibility does increase your chances of a date on Saturday night.