imo one of the reasons is it’s bc it goes against the “born this way” narrative that’s been the dominant narrative in the trans community for decades. and it makes sense, because wider society only began to accept us on the basis of it being something we can’t change so they must begrudgingly say ugh fine just do your best to look cis and blend in. for a lot of trans people, they did feel like they were born this way. the idea that someone could feel dysphoric and decide to transition, then decide later on that it wasn’t right for them, goes entirely against the idea that all trans people are born trans and know from the time we’re extremely young that we’re trans. so the obvious answer is that they were never trans, and it was their mistake to transition, instead of just like. a very small but possible outcome of choosing to transition.
if we want to advocate for trans people to be able to transition without a hundred million barriers, we have to accept that some people will change their minds or regret it the same way that some people will regret getting knee surgery or moving to a different country or marrying someone that ended up not being right for them. it’s just a consequence of having free will. and punishing the people who have a different outcome of that free will than we do is only going to make things harder for us.