This is the most pragmatic approach, refusing to walk the labyrinthine trail of gender choices. What is wrong with a man accepting his biological sex and ident

This is the most pragmatic approach, refusing to walk the labyrinthine trail of gender choices. What is wrong with a man accepting his biological sex and identifying as female, for example? I think the issue is that said man wants people to call him "she" so he can feel his womanhood complete, something he can never achieve because he's still genetically male and his femininity can only imitate that of a genetic female. He is Paul, born male and identified as female. She is Susan, born female and identified as gay male. Simple.