"The False Dilemma fallacy is a logical fallacy that occurs when only two choices are presented, when in fact there are more viable options available. This fallacy is also known as the "false dichotomy," the "either/or" fallacy, and the "black-or-white" fallacy. It is a form of oversimplification that ignores any other potential choices."
To present that you must be either be assigned male at birth and experience a life coloured by the experience of being male or not identify as a man at all is a false dichotomy.
Sometimes it just makes sense as well, some trans men look like men and live as men and I don’t think calling them women makes sense in any context.
I personally fall in to the catogory where I fall into many commonly accepted definitions of a girl and that’s okay with me because it’s just the truth.
If you really have anything worth saying you should probably be able to make a systematic argument like this:
A. Gender performance is socially inforced, if a girl wears a dress she is called beautiful, when a boy wears a dress he is told to change because dresses are for girls.
B. Gender and sex are brutally controlled: intersex people are physically mutilated as newborns to conform to a sex, then the gender associated is pushed on them.
C. Such constructs are incorrect: boys should get to wear dresses and intersex people should get to be nonbinary and choose their gender later on
D. Regardless of whether these constructs are correct they exist and gender will continue to be socially moderated and reinforced.
E. I deserve to resist my gender moderation in commonly accepted terminology. I deserve to be able to say I am a trans man or nonbinary instead of explaining the exact aspects of feminine socialization I reject, when I say I am a trans man, I am making a claim about myself instead of going around telling people what to call me.
I reject all compliments that reinforce my conformity to femininity, I reject being called pretty and feminine and a good girl.
I shouldn’t need to explain that. I should be able to just say "I am a trans guy" and them to realize immediately how inappropriate any comment like that would be.
Summary: gender is not about biology it’s about control, it is used to humanize and dehumanize and we should be able to reclaim that narrative not to discredit our biological sex, but to discredit the role it plays in our place in society and everyday social interactions.