Sorry, girls, no rain in the forecast.
On a serious note, they mean working women that have put off getting married until their 30s so they could have a career are finding out you can't micro-manage you life that easily.
Reality check. The typical 30+ year old guy is looking for a woman in here mid-late 20s to marry. 40+ year old guys more than likely are married or divorced with kids.
The fact that women put off their personal lives until their 30s doesn't mean men did. This is the same thing that happened in the US in the '80s and '90s when you saw all the "where are all the single men" stories. The single men were out there when the women were in their 20s, but the chose to wait. By the time they were ready to get married (their 30s) those single men had been snapped up.