I can entertain the idea to some extend, (Hermeticism) but I don't think there is a rise of a gender or a decline of another. Since the 1800 the world population have pretty much doubled to 7 billion, of course you will notice that more people will talk about it because there are simply more people alive than ever before, therefore: the statistics increase in the rate humans exist. It is the same as the rate of crime. You could say that crime is increasing, but that is false. There are more people than 50 years ago, thus more crime. As far as I know, transgenders always existed. From the Indians, Greeks to the Egyptians, they always were amongst us. In fact, most of them were revered, nowadays they are being feared. Although completely different, homosexuality always existed, but it was taboo so no one knew about it. Sure, you can see the rise of feminism through history, but that's just a ripple in time. Every gender interchanged roles in the course of history. There were even native tribes that reversed all gender-roles: females went hunting, males cared for the children. It was completely intuitive for them. Is it due to some planets hugging in the sky? I doubt it.