For starters, adults can start acting like adults. In the case of the "Ma'am" person, an adult in the room should have said: "Look you need to understand that your body is not going to transition into a female body. At the end of the day, you won't be able to have kids, you won't make a female bone structure, you will have male undertones in your voice, even after voice training, and your appearance will be as such that people will see you as male and not female. Considering this is a life-altering change are you sure this is the path you want?
But instead, not only do many trans people block these things from ever being said (gatekeeping, etc), counselors are trained moreso to be *confirming* in their diagnoses, rather than really doing the legwork. I hate it that on some furry chat groups you see these half-bald people with pit hair and a dress being called beautiful and cute. It's feeding into delusions of grandeur. There are some trans folks who are NO DOUBT hot as fuck, but those are generally the exception and not the rule. It's also those that not only got it done early, but also took very good care of their bodies. The "ma'am" person was already fat, and muscular, nothing that will work if you're trying to pass as a female.
No one has ever been able to answer the questions such as "If you identify as black, can you wear black skin?", or "If you identify as a quadriplegic, can you hack off arms and legs?", or "If you identify as a child, can you play 'house' with little children in the neighborhood?". Things like this. Why "gender" is such a hugely special issue in this case, and not other things is confusing to me. If we are going to allow people to change their genders, and society is going to bend that way, then I do not see why society cannot bend that way on race, age, or handicap in general. They are all at their core "identification" issues of ones self.
This whole thing from a scientific perspective reminds me of lobotomies, which were hailed as cure-alls, and ended up being devilish practices in the end.
I have no doubt GD is real, and a lot of these people need help, but if we choose a path to help people with GD, we need to have the same path for people who have RD, or BD, or any other -D diagnosis.
Will society accept that? Somehow I doubt it.