Adults are capable of making their own decisions. That doesn't mean I think they are right.

It doesn't make sense that gender disphoria is anything other than a mental health condition and while I can accept that for some subset of the population that has it maybe gender transition is their best solution, it is an extreme solution for something that might have any number of causes or less invasive solutions entirely.

Kids are just too young and impressionable to sort this stuff out at all. At best you can claim it's suicide delaying care. Cause of course a depressed kid getting literally any drugs at all will likely give them some degree of hope that it will be fixed, but if that ends up being false hope, and once that initial euphoria of taking testosterone or estrogen or whatever starts to go away and you are left with the realities of the situation, you're still you, if your problem was "I don't accept myself" then you're still going to have that problem after transition, along with a bunch of new health problems and surgical complications potentially. Basically what I'm saying is that if you are depressed and want to kill yourself because other people don't see you the way you want to be seen, that's actually on you for caring. Even after you transition other people aren't guaranteed to see you the way you want to be seen so it won't do anything in that area, it won't actually make you a member of the opposite sex it's mostly cosmetic. You've got to basically not care about other people and accept yourself to stop the suicidal ideation. If you go off on some side quest instead once that is done now you're just the same you except with a slew of new medical complications that likely contribute to suicidal ideation more than if you had just done nothing at all.

Statistically there isn't much to say about it. Most studies on this have been woefully inaccurate and at best we can say that people currently in the process of transitioning are less likely to suicide than people before or after transition, which is logical. However long term it seems to indicate transition does basically nothing to suicide rates with post op suicide rates being roughly identical to non-op or pre-op rates. There's also of course the issue with getting statistics in general from self identified groups.

It's very similar to the issues with homeschooling and statistics there. Homeschooling advocate groups will claim that homeschoolers test better, and ostensibly that is true, because only academically inclined homeschoolers test, parents wishing to neglect or not educate their children at all or parents who are paranoid of the government taking their kids away for such reasons won't appear on the statistics at all. So it's very difficult to get any authoritative information from the statistics themselves.