While I understand their concern, they also need to think of...other possibilities as to why their plays aren't being produced.
For one thing, many writers write plays that aren't being produced because they won't make money. And it's not just plays written by females that aren't being produced for that reason, it's the same for males. If the play won't make money, or an audience can't connect, then it won't be chosen. It doesn't matter the gender, if there's no connection it won't work.
I always hear about how hard it is for women to get highly respected jobs. It's also hard for males to get certain jobs. It's hard for people of any color to get certain jobs. It's hard for people who don't have a higher education to get jobs, and it's hard for those who do have a higher education to get jobs.
It's hard for everyone, and the sooner we all put our reasons for why we aren't hired aside, and instead just work harder, we can hope to get the jobs we want.
"Light the candles! Get the ice out! Roll the rug up, it's today!"