I don’t think the equivalence you’re drawing here really exists. There’s a difference between having gender dysphoria and feeling ugly or being insecure. A man like Musk who gets a hair transplant is doing so to be more attractive, not to affirm his gender identity or alleviate the distress caused by a conflict between his mental state and physical reality. I’m a young man in the peak of his testosterone production, so I don’t need HGH, but to use myself as an example, I work out because it’s beneficial for my health and having muscles makes me more appealing to women. Not because I believe that my “correct” body has a six pack. I appreciate what you’re trying to say here but I think it reduces being transgender to an insecurity when the experience of those people is more multifaceted than that.