Again, the dysphoria is caused by not feeling comfortable with your gender. Trans people solve that by transitioning. That's why you don't see trans people regretting it or trying to undo it in any significant amount. Once they've transitioned, they feel comfortable with their gender, therefore problem solved.
Of course, that transition also usually leads to other types of discomforts caused by other people not respecting their decision, but hey, it's not trans people's fault other people are dickheads.
It could just be the uncanny valley. Like it or not, we’re used to looking at other people as being either male or female and many trans people don’t make good versions of what they wish to present as. There’s also some men who enjoy presenting as female as a sexual fetish which can cause problems in locker rooms and other female only spaces.
Oh I don't mean transition as in sex-reassignment-surgery-exclusively. Sometimes it's as simple as changing clothes and growing/cutting/painting your nails and hair.
Of course, that transition also usually leads to other types of discomforts caused by other people not respecting their decision, but hey, it's not trans people's fault other people are dickheads.