I'm so glad my children are late 20s and largely missed this. A teacher on another thread in the last couple of days said in a recent PHSE class it emerged that the whole class of year 9s (so 13 and 14 years old) believed that it was literally possible to change sex through surgery and hormone treatment, and then to reproduce in the new sex. This is not possible and never will be.
The outcomes of sexual reassignment surgery are actually very poor and the vast majority of those who have it become infertile and lose any possibility of having a satisfactory sex life. Given this, it's fortunate that it's very rare to have this surgery (another thing many people don't understand - the vast majority of people who self-describe as trans are not having SRS).
It's not surprising that so many teenagers are confused, as the language used and the self-promotion going on on various social media platforms is very misleading and hard to make sense of.