However much you don't like it, transgenderism does exist. The numbers seem to be growing hugely of late however there were those who identified as the opposite gender to that which they were born 200 years ago. My Dp's nephew told his parents he was a boy at just 5, 20 years ago long before these discussions were commonplace and the internet was still rudimentary.
Discussion on the science behind transgender people is necessary, perhaps we might start to work out why the increase, the triggers (my theory is childhood trauma purely from personal observation) and how to spot those with true gender dysphoria from troubled teens with mental health issues.
I've personally known two young people who have returned to identifying as their birth sex after years of claiming trans as well as several ftm. Interestingly i don't personally know any mtf.
I will be visiting the sm soon and will report back with first hand information