Like dinnerisready mentioned, it has a lot to do with a fragile identity, being at such a young age, and not only that, there's a shit ton of societal pressure, atleast on the internet where f1nn is most popular, to be like everyone else, and the loudest voices tend to be those that say "no, you're not a tomboy, you're a man" or "no you're not a transvestite, you're a woman". It also doesn't help that mental illness is now seen as a badge of honor rather than a disease that needs to be cured. After all, if you say any of this sort of thing, you'll get people screeching at you saying you're "bigoted" and other such nonsense.