Subyman: I see it as a poor parental choice.
M: Really! Do you also see that this is your opinion, one not based on any personal experience with the child or the parents, which sort of makes it a really filthy opinion because it's judgmental. The only person demonstrating poor choice is you. You know nothing but you are judging. How thoughtful of you.
S: I'm not sure about the "morality" of it.
M: What do you mean you're not sure about the morality of it. There are no moral ambiguities here. It's immoral to fuck up your kids. Are you from Mars?
S: If you want what's best for your child then it shouldn't be setting them up for a complicated life through their childhood, adolescence, and adult life.
M That would only be true IF the alternative to that would be worse for the child. What evidence do you have that that would be the case? None of course. but your opinion, the one that's judgmental.....
S: Say the child would turn out cisgendered, but simply has childish thoughts about looking up to his sister. Then indulging that at age 3 and letting them wear dresses, put on make up, and such could set them up for a major crisis. Nearly all children ask gender questions, but statistically nearly all kids turn out cisgendered. So immediately going down the path of "transitioning" a child at age 3 because the want to be like their older sibling is, frankly, crazy.
M: Yup!
Being open minded is awesome, but as they say, you shouldn't be so open minded your brain falls out.
M: Focus on having a brain to fall out before worrying that it might. Your hypothetical above is all well and good but you have no idea at all if that is what is actually happening. You have all this cabbage in your head and you can't seem to let go of it. Stop judging this family and their problems when you have no idea what they are or how to solve them best.
It was YOU who was fucked up as a child and YOU who is angry about it. You do not know what you feel or how it drives you. Empty yourself of opinions and look around. You will find people everywhere who are full of shit. Get to know yourself and you will have real understanding and experience.
I'm pulling for you.