Because definitionally they believe 'the diagnostic criteria for transgender is dyspgoria. The cure to dysphoria is HRT. Take the medicine.'
And I think this message was helpful to me, to read "take the medicine, you need HRT to feel better." - I'm a trans female. This message doesn't apply to like more than half of all trans people, and for some odd reason they also use it to exclude those trans people. Euphoria is also diagnostically trans, and HRT isnt the right treatment for most trans people. Youre valid.