I addressed this in another comment, but for most trans people there is some component of both physical and social dysphoria. I have physical dysphoria to the extent that I had signs when I didn't even know what the word transgender meant. Untested of course but growing up feral on a desert island I believe I would still have physical dysphoria.

My opinion is that the root of the issue is a combination of misinformation, outrage porn, cognitive and attentional biases, scapegoating, and isolated demands of rigor.