I really don't know how I can make this clearer.
Puberty is a very difficult time for a lot of girls as their bodies start changing in ways that can feel alien, men start to "take notice" wich can be unsettling and scary, it means "growing up" and girls have seen all teh things that it means to be a grown up woman in our society via the media and generally it can be scary.
Many girls have reacted to that in the past by trying to slow down / stop puberty, and / or hide their developing bodies from the world. The methods employed were restricting eating and / or baggy clothes.
Many girls have a very unhappy relationship with their bodies, with self esteem etc around puberty
There is now the possibility which is fairly mainstream (highly present in media) that puberty can be STOPPED, breasts, hips, spots, periods, the whole lot, with blockers. And the most visible aspect (breasts) can be really thoroughly disguised.
I believe that many of the girls who would have starved themselves etc 30 years ago will be pretty tempted by this.
The fact is that the fastest growing group in gender ID clinics is girls, which seems to support that there is something going on, that seems fairly obvious to a lot of women, but the TRAs are adamant must NOT be looked into.