Blame comes in when things go wrong. Few poeple look at themselves. But when folks play a lesser role, they are even less likely to look at themselves.
If a dud tries to holla, what do many women say to their friends? Ain't no men in here. Ugly dudes always tryin' to holla. The men in here are lame. Why don't men know how to approach women? Etc.
Turn that around. You holla at a dude or 2. Duds. Because you were more active, you now have to analyze yourself. What are you attracted to? Where are you when you meet all these duds? And so on. If you're on top of it and honest, you make changes.
And that's just the duds. What happens when you holla at what you perceive as a good dude and he doesn't bite? "Damn! He was smart, funny, etc. Why didn't he ask for my number?" Again, you have to analyze yourself. "Did he not think I was smart? Did he think I lacked a sense of humor?" We (men) do this all the time and make adjustments. Women don't, or only seem to do it regardin' their looks hopin' that will get more men to approach. And you're relyin' on a single trait to attract men.
I only mention motive to point out why we can get away with what we get away with. Gettin' laid is easy. Findin' a quality mate is more difficult, and the stakes are higher. With the assumption that women tend to look for more than just sex, the stakes are always higher for women. Why leave that up to the men that are willin' to approach? You wouldn't use that mindset in any other aspect of your life. For example, if you want a good job, you don't sit around hopin' & wishin'. You don't wait for "work from home" email blast. You put together the best resume you can and "approach" employers.
And again, don't forget the opportunity cost.