I found this article interesting because it discusses the complexity of regret and of estimating rates of regret, and it discusses why the estimates vary so widely depending on the methodology:
https://slate.com/technology/2024/02/transgender-youth-health-care-regret-pamela-paul-nyt-data.html
Neither detransition nor regret are simple concepts. Transition, as with all social phenomena, is complex. You can stop taking hormones and still be trans. You can regret taking steps that alienate you from your family, even as you wish your family would accept you living how you want to live. You can even regret some aspects of a treatment (any kind of medical treatment!) while being grateful for the knowledge you gained by trying it out. Regret doesn’t always mean that people wish they hadn’t transitioned, it just means that there are some parts of the story that they long to change.