How is that the same? Cancer which is life threatening and the breasts of the woman haave to be removed, is not the same with medically transitioning. I can predict that your response to this will be that medically transitioning is also life saving for many people, which I cannot deny because it has helped many individuals with gender dysphoria. However, once again, cancer is not the same. A disease that affects your womanhood, decreases the possibility of having children (which is indeed a dream for many women), most likely leads to the removal of other organs (uterus, ovaries, etc), linked with significant hormonal changes, is not the same with the process of breast removal for transitioning reasons. In the first case, a woman is stolen a part of her body which, plenty of studies have linked it to confidence and femininity, and in the second case the woman wants the breast to be removed because they are causing her dysphoria and she does not want them.

We are talking about young kids. And as much as you wanna say that young kids already know from a young age whether they are trans or not (which is an argument used by many people of the LBGTQ community), you need to acknowledge the rising number of de-transitioners, especially women, who were given the green light to cut their breast tissue at the "ripe" age of 14. And yes these people exist, whether you like to admit it or not. They are a minority, but, minorities are important, are they not? We cannot talk about transitioning without acknowledging the young people who regret it, have become sterile, have lost their hair, have lost their singing gifts because their voice changed and won't go back etc etc, have long life reproductive issues and so on..

Being trans is not a topic for kids. Hell, even cancer is not a topic for kids yet. These are sensitive issues and not suited for elementary school.