I think people are beginning to get wise to illogical box ticking. Jordan Peterson is one of the ones who talks about this best.
The only person I know of who is a fan of Jordan Peterson is a Mormon. Take one letter out of that and you get what I think of Jordan Peterson
This system has been brought in because of the historical and ongoing imbalance in the gender of comedy writers. Women just aren't getting their comedy on screens, because of the vicious circle of needing experience to get a look in, yet not being able to get said experience because they can't get a look in.
This isn't some minor discrepancy, women in all levels of comedy just aren't getting the same opportunities as men. This won't solve the problem on its own but is a significant contribution.
When it comes to implementation, common sense will come into play - single writers may be co-commissioned a writer to ensure gender balance, for example.
Rexogamer, Steve Williams and WW Update gave kudos