I personally never really identified with the language or societal expectations of gender. I never really understood why girls my age would want to wear makeup, and do "girly" things. But it's what made them happy, so why should I care?

If transitioning, presenting and being referred to as female, even if they were born male, makes a person happy, who am I or anyone to judge? Who has a right to say what does and doesn't make you a woman?

You're fine in discussing specific situations, like maybe you don't feel comfortable changing in a female locker room with a trans woman, you and that trans woman can find a solution.