I never said it would not be used for further harassment, but consider that fundies are also entirely too fearful, ignorant, and two-faced to not complain that the legislation failed to protect them, while allegedly protecting them, from eww gross moments. Keep in mind, this exact situation is going to come up IRL, and the transpeople who very exactingly and deliberately obey the letter of that law will do so, ironically enough, as a form of completely law abiding yet effective "civil disobedience", and produce even more sociopolitical momentum to rescind that law.
I think your opinion that bigots can or will tolerate it is naïve.