I wonder if you would like to expand on that a bit.
I will tell you my take on it to start. My take is that we are essentially mammals, and as mammals we conform to the things that make us mammals, that is that we are a binary species, male and female, and it takes gametes from both to produce young, which are ( a few odd Australian species notwithstanding) grown in the body of the female, and on live birth feed from her body. This is how our species has evolved and survived. There are exceptions, as there always are because genetics is often a bit random, but even with those exceptions, the genes we carry, inherited from our parents, and the chromosomes in those genes, along with the physical characteristics we have as a species, categorically define us as either male or female and we cannot change that physical definition, it is in every cell of out bodies.
We are however, like most mammals , a social species, and as such we developed over thousands of millenia patterns of social behaviour which for the most part involved the stronger and faster of the species ( in humans as in many other species, this is the male ) taking on certain roles within society, and the female, with the added burden of carrying and nurturing the next generation, taking on other social roles. Over time these gendered roles came to define what we saw as male and female behaviours, and for good or bad , were often seen as expected and normal responses to our sex. It has taken a long time for humans to accept , and some still don’t, that gendered roles are not fixed, as our physical characteristics are, and that both women and men can undertake social roles that fall outside what were seen as gender specific until relatively recently.
So I see sex as specific, you are either a woman or a man, but how you choose to behave within that definition is non specific. You can take on any role in society, it doesn’t depend on your genetic sex. So to me the concept of someone having both a sex and a gender role is out of synch with how we live our lives today. I am a woman, and how I choose to live and behave is my choice within my physical limitations. I do not feel the need to conform to what I see as out dated ideas about how women should dress, speak or behave. Though if other women choose to do so then that is their prerogative.
I find the current insistence on gender identification being the starting point for behaviour, attitude and expectations very puzzling, and frankly retrograde. Why invent complicated ways to live your life when all you need to do is understand that you are a human woman or a human man, from then on the choice is yours as long as you respect other peoples boundaries . You don’t need a gender identity since you already have a sex.