Pretty sad how science is a redheaded stepchild that political partisans of any stripe choose to ignore when it inconveniences them.
It's also sad because it's so unnecessary, nobody says science has to be a Religion, in the case of troons people can crossdress and "identify" as the opposite sex if they realllllllllly want to, but it's only a problem when you push that past the point of any semblance of reality, logic and reasonableness.
It's the same deal with feminism, we can hold up equality between the sexes as a nice ideal, but when you want to push things to the point where you ignore any reality of sexual dimorphism do you really run into trouble.
In other words human beings are free to set certain parameters, but only within a reasonable limit, ie when it bumps too much against cold, hard facts.