It’s only a problem if those women don’t settle for the men they date. If they would, the balance would always be restored:
Top 20% of men settle with 20% of women. A new top of men takes over replacing the old one.
The main issue is that relationships don’t last. And that has to with the 20% of men not wanting to settle as they have free and abundant access to sex, which has been historically the primary reason for men to settle.
On top of that men are at their prime way longer than women: easily between 25 and 45. Women lose perceived value as sexual partners after 30/35 by many men.