I think I get where you're coming from. I don't necessarily agree, but I get it. I can imagine there are a lot of kids that don't know to ask certain questions, don't know certain things are even an option, and end up in similar situations because they don't truly understand themselves until much later in life. It would be nice if puberty didn't kick in until kids understood themselves better, and had developed mentally a little more. But I think unless we're just artificially shifting the age of puberty to 20-25 universally, it'll cause many of the same problems and a host of new ones.
Now, if we could somehow press a magic button, and shift puberty to the early 20s universally? That could probably solve some problems, and also really help with education. Haha. But if we've got magic buttons, id rather just have a button that allowed everyone to be the sex and gender they preferred.