Thats a real thing. Breeder Steve is working in another country on that exact sort of plant. I believe it is a triploid that they have mapped some of the genetic markers for (they have $$$$$ to spend on R & D) and they have found it doesn't produce pistils, which makes it sterile and any outdoors growers dream, whether it be Cannabis or Hemp.
I've always had that conspiracy side of me that said Fems are a way to prevent people from making their own. I also think all the Selfing going on now is because of people not understanding breeding or having the time for it. They want money money money and selfing a plant is about as basic as you can get. I see why someone would do this, no shame there but I hardly consider it breeding.