Catkind
I don't think it possible to do without bias. It always creeps in. The mental gymnastics it requires are simply cognitive dissonance.
I've spent over 10 years dealing with it and listening to my mother attempt it.
The denial it involves is impossible to avoid. It's that denial part which is the biggest issue out of all of it in my experience. Not the identity, but the power and control over creating this alternative and then trying to change the world around to fit to that, rather than adapting to the world like everyone else.
It can not be separated out.
The ultimate inescapable truth is everyone's experience is based on their sex, even if they are trans. They will only have the trans experience that relates to their sex, not the opposite. You are either one sex or the other. Unless you are intersex which is another entirely different thing again. (Though there has been many attempts at appropriation).
The experience of a female trans person is not the same as a male trans person. And you can't have a trans trans person. (A transwoman who becomes a transman) Nor can a woman be a transwoman.
I have tried many times to cross this bridge. I can't do it and maintain my own sense of self and worth. I wish it were possible. Truly I do.
I do think anyone who tries to tell you different is simply dishonest or in denial.
That's not to say gender isn't important to many, many people. It's just that it does not and can not adequately replace the reality of sex. What defines you as who you are is unique to your personality, but your physical being is a legacy of your genetics from your parents.
The experience of being transgender is unique to the sex you were born. Ironically, you can not define being trans without reference to your sex. It's the elephant in the room.
You either accept this reality or express ideology to deny it one way or another to a varying degree.