I'm seeing the tranny trend as two separate issues. There's the teens declaring trans because teen angst/popularity/cool factor. Kind of like tattoos and piercings. And, like most fads, I expect it will pass.
Then, there's the athletes. I recall reading a survey years ago among college athletes that was addressing several issues. The one I remember clearly was a question which asked, more or less, would you take a drug that would boost your athletic ability by 10%, but it would also shorten your life by 10%. An overwhelming majority said they would. Now, you take this same mentality among male athletes who are training hard but just not competitive for whatever reason, and drop in the idea that they can claim tranny status and compete as a female. Some are going to see this as an opportunity to gain a competitive edge. And they are taking that opportunity, because the PC police aren't allowing them to be criticized for doing so. Now, I'm starting to see push back from real females, seeing female athletes hurt by the inclusions of tranny athletes in their sports, and the loss of opportunities, scholarships, sponsorship money, etc. Won't it be fun to watch the fight between radical feminists and tranny supporters?