They are one of the modern day Gnostics.
Gnosticism teaches the flesh is evil and must be done away with. Transgenders do not feel right in the gender they were given, so they do away with it to make their flesh fit their mindset.
I don’t think Gnosticism is it. They think they’ll be normal if they change how they look. They become convinced that their sex is whats wrong and surgery will make it right.
Mental illness is real and those afflicted are very vulnerable to abuse.