Trans people have been using the bathroom they feel they need to all over this country for years without conflict. The problem with the current push is the perverts who want access to female bathrooms and dressing rooms. If these perverts decide to say they are trans, according to PC dogma they are.
Considering the tech today, it would be ridiculously easy to place cameras all over said spaces quickly, easily, and without detection. I strongly suspect that in an attempt to protect trans people, the unintended consequences will be increased victimization of women and girls, and yes, some of those women and girls will be, ironically enough, trans.