>>718590764
Gender dysphoria is a social psychological disorder. A gender identity isn't just internalized. It also is based on the beliefs and actions of OTHERS. That's why it's not enough to truly believe or even know that you are a girl inside. They crave and demand social validation from others. Normally social roles are negotiated. Their position on the other hand is a demand and is completely non negotiable.
And when whatever current level of acceptance fails to fix the problem, they see the solution as demanding even more, open displays of support.