I think it's more a case of women feel that they're not noticed by the guys they want, but the guys who WOULD want to date them are invisible to them.
I don't think the inverse is the case nearly as much with guys. The reason is because a guy is much more likely to date a less-than-ideal woman rather than be date-less, while a woman is more likely to stay home (or go out with the girls) rather than having her ego contemplate the possibility that a particular guy may be the best she can get.
Cannot agree with your assessment. I have seen many, many women settle for jerks and losers rather than be alone.
Conversely, I have seen many men chasing after women who appear to be out of their league in terms of looks but usually not in terms of character or brains. Meanwhile, they completely ignore the ladies of good character or exceptional intelligence because these don’t have the Hollywood looks or the knockout figure.