Public education and large corporations are working to indoctrinate children about LGBTQ, down to as low as the age of two (by their own admission). Is it any surprise the phenomenon has increased among younger people? This is literally all they know. In fact, if they identify as LGBTQ, they're so special they will get a parade and maybe an extra cupcake.
The other thing to remember is that women tend to buy into this movement more readily than males, so yeah don't be surprised if there is a shortage of women in the dating world in the future. Although as Haley says above, many of these women drop the idea as soon as they get a good craving for d!ck. But they are still off the market for as much as years at a time while they experiment.