If you think this person has a mental illness, then you aren't being inclusive or kind!
I wish you well on living your best hawk life now, Horus.
If you think boys can be girls and there are infinity genders, you can't deny this deep-seated trans-species desire. If genetics and chromosomes are subjective in one way, then they are subjective in every way.
Some of us tried to say that it was actually mean to not get these people the mental help they need, but we were sent away. Enjoy the consequences, society.
Be free, Horus! Be free!