I agree in the cases that's true, but as has been mentioned, there are actual women on this forum. I know one personally, and others I've spoken to off FF and am 99% sure they are as well.
Let's put the numbers in perspective though. This thread is only a couple of pages long (compared to other popular threads), and not a lot of female answers. Compare that to the number of members the forum has (104,520 as I write this); it's a really low percentage. I think it's very plausible that at least this small number of FF members are real women, actually into cum.
FF Mods and Admins don't take kindly to identity fakers, but we try not to smack down every member claiming to be female. Give 'em a chance to show their true colors one way or the other.