It's a good question. In the past few years, I've noticed that many newly out trans people (and newly out Autistic people, for that matter!) can easily become the voice of our communities in the public eye, especially in the cases of figures who were already prominent. This can create many issues, as the newly self-realized trans (or queer, or disabled) person often is still unlearning a great many biases, and doesn't fully know the community from being in deep relationship to numerous other people with disparate experiences all that well. I have also however seen closeted trans authors such as Isabelle Fall (google her case if you haven't read up on it) being pilloried for telling stories that were not "theirs" to tell, when in actuality they were members of the community, and had a lot of important things to say. I think the most important thing is to be humble, and to take all the steps that you can to build deep, personal, one on one relationships with lots of people in the identity group. That won't just benefit your writing, it will help to heal your soul.