I do think detransitioners are the key. I wonder how many transitioners there are who feel stuck where they are?
Very few, regret is very rare. I wonder how much of the way some people look at this is that they personally can't imagine what it must be like to want the physical characteristics of the other sex and feel personally horrified at the thought of being somehow a somehow deformed or mutilated parody of that sex. And the thing is trans people don't see it that way at all. We are well aware of the limitations of transition but we do it anyway, and feel better for it. It's not long we're in a state of permanent torment at the body we destroyed and the body we can never have - we make the best of it, make the changes to the point we feel comfortable and get on with our lives and very few have regrets, quite the opposite in fact, most people say it felt absolutely necessary and was the best thing they've ever done.
I think a lot of the drama needs to be taken out of transition/detransition. Whilst I appreciate with young people it's different, but detransition never really used to be such a big deal. Someone might change their presentation of take hormones for a real and then decide it wasn't for them, or often wasn't the right time and stopped. And even with the young it takes a long time to transition. It's not like you swallow a puberty blockering and that's it, you've made inevitable changes. You have to keep taking them, and then start taking hormones, and if you don't like developing the characteristics of the other sex as hormone changes kick in you can stop. That's why there's so few detransitioners, because in the UK at least the idea the second a girl kicks a football she'll be whisked off to the Tavistock and forced onto lifelong medication is a wild falsehood. It takes years, just to get there, and then the vast majority will not have any treatment - and the ones who do, whose gender dysphoria has been consistent and persistent for a long time, when it persists into the first stages of puberty, and when they continue with the treatment for several years are almost certainly going to become trans adults who would have transitioned anyway.
Detransitioners deserve support, their story should be told, and most importantly the stigma around detransition should be reduced. But the idea that there's hundreds of them just waiting to bring law suits that will destroy the trans forever is a fantasy I'm afraid.