I read around reddit of experiences of people who wore VR headsets and played a character of the other gender. The NPCs treated them as such, but they themselves experienced gender incongruence. Their internal identity was at mismatch with how the NPCs treated them, and that helped them understand what gender dysphoria means.
Can you link to the post about that? Because I’m guessing there’s a selection effect where only those who had profound experiences commented. I’ve done similar things in VR and found it wasn’t any different than when I had a robot body or a cartoon carrot body. Yes the new body is strange and interesting in some ways, but on an emotional level it’s like driving a different car.